Information Retrieval (IR) is the discipline that deals with retrieval of unstructured data, especially textual documents, in response to a query or topic statement, which may itself be unstructured, e.g., a sentence or even another document, or which may be structured, e.g., a boolean expression. The need for effective methods of automated IR has grown in importance because of the tremendous explosion in the amount of unstructured data, both internal, corporate document collections, and the immense and growing number of document sources on the Internet.. The topics covered include: formulation of structured and unstructured queries and topic statements, indexing (including term weighting) of document collections, methods for computing the similarity of queries and documents, classification and routing of documents in an incoming stream to users on the basis of topic or need statements, clustering of document collections on the basis of language or topic, and statistical, probabilistic, and semantic methods of analyzing and retrieving documents. Information extraction from text has therefore been pursued actively as an attempt to present knowledge from published material in a computer readable format. An automated extraction tool would not only save time and efforts, but also pave way to discover hitherto unknown information implicitly conveyed in this paper. Work in this area has focused on extracting a wide range of information such as chromosomal location of genes, protein functional information, associating genes by functional relevance and relationships between entities of interest. While clinical records provide a semi-structured, technically rich data source for mining information, the publications, in their unstructured format pose a greater challenge, addressed by many approaches.
Mining Opinion Features in Customer ReviewsIJCERT JOURNAL
Now days, E-commerce systems have become extremely important. Large numbers of customers are choosing online shopping because of its convenience, reliability, and cost. Client generated information and especially item reviews are significant sources of data for consumers to make informed buy choices and for makers to keep track of customer’s opinions. It is difficult for customers to make purchasing decisions based on only pictures and short product descriptions. On the other hand, mining product reviews has become a hot research topic and prior researches are mostly based on pre-specified product features to analyse the opinions. Natural Language Processing (NLP) techniques such as NLTK for Python can be applied to raw customer reviews and keywords can be extracted. This paper presents a survey on the techniques used for designing software to mine opinion features in reviews. Elven IEEE papers are selected and a comparison is made between them. These papers are representative of the significant improvements in opinion mining in the past decade.
Conceptual foundations of text mining and preprocessing steps nfaoui el_habibEl Habib NFAOUI
This document provides an overview of conceptual foundations and preprocessing steps for text mining. It discusses the differences between syntax and semantics in text, and presents a general framework for text analytics including preprocessing, representation, and knowledge discovery. For text representation, it describes bag-of-words models and vector space models, including frequency vectors, one-hot encoding, and TF-IDF weighting. It also provides an introduction to n-grams for representing sequential data.
This document provides an overview of information retrieval models, including vector space models, TF-IDF, Doc2Vec, and latent semantic analysis. It begins with basic concepts in information retrieval like document indexing and relevance scoring. Then it discusses vector space models and how documents and queries are represented as vectors. TF-IDF weighting is explained as assigning higher weight to rare terms. Doc2Vec is introduced as an extension of word2vec to learn document embeddings. Latent semantic analysis uses singular value decomposition to project documents to a latent semantic space. Implementation details and examples are provided for several models.
Use of ontologies in natural language processingATHMAN HAJ-HAMOU
The document discusses the limitations of classical natural language processing approaches that rely solely on text-based search and statistics. It describes how ontologies can help address these limitations by representing knowledge at the semantic level rather than just words. The document outlines how ontologies can solve problems related to vagueness, high-level concepts, semantic relations, and time dimensions. It then summarizes two research papers that explore using ontologies to index and categorize documents as well as provide multiple views and dimensions to explore a document collection.
This paper proposes Natural language based Discourse Analysis method used for extracting
information from the news article of different domain. The Discourse analysis used the Rhetorical Structure
theory which is used to find coherent group of text which are most prominent for extracting information
from text. RST theory used the Nucleus- Satellite concept for finding most prominent text from the text
document. After Discourse analysis the text analysis has been done for extracting domain related object
and relates this object. For extracting the information knowledge based system has been used which
consist of domain dictionary .The domain dictionary has a bag of words for domain. The system is
evaluated according gold-of-art analysis and human decision for extracted information.
Using ontology for natural language processing can help mediate human-machine communication. Ontologies provide a formal representation of knowledge that can be used in natural language processing. The document discusses how general and specific ontologies can be combined and used with natural language processing techniques like machine translation and speech recognition. It also describes how ontologies can be extended over time using artificial neural networks to improve natural language understanding abilities.
Text Mining is the technique that helps users to find out useful information from a large amount of text documents on the web or database. Most popular text mining and classification methods have adopted term-based approaches. The term based approaches and the pattern-based method describing user preferences. This review paper analyse how the text mining work on the three level i.e sentence level, document level and feature level. In this paper we review the related work which is previously done. This paper also demonstrated that what are the problems arise while doing text mining done at the feature level. This paper presents the technique to text mining for the compound sentences.
A Simple Information Retrieval Techniqueidescitation
The document presents a simple information retrieval technique that involves removing stop words and punctuation from documents, calculating term frequency and inverse document frequency, constructing a master document matrix, and ranking documents based on similarity to user queries. The technique is demonstrated on a sample collection of 5 documents. For a query on "information retrieval system", the documents are ranked from most similar to least similar as document 5, document 1, document 2, document 3, document 4. The technique provides an easy way to search and retrieve relevant documents from a collection.
Mining Opinion Features in Customer ReviewsIJCERT JOURNAL
Now days, E-commerce systems have become extremely important. Large numbers of customers are choosing online shopping because of its convenience, reliability, and cost. Client generated information and especially item reviews are significant sources of data for consumers to make informed buy choices and for makers to keep track of customer’s opinions. It is difficult for customers to make purchasing decisions based on only pictures and short product descriptions. On the other hand, mining product reviews has become a hot research topic and prior researches are mostly based on pre-specified product features to analyse the opinions. Natural Language Processing (NLP) techniques such as NLTK for Python can be applied to raw customer reviews and keywords can be extracted. This paper presents a survey on the techniques used for designing software to mine opinion features in reviews. Elven IEEE papers are selected and a comparison is made between them. These papers are representative of the significant improvements in opinion mining in the past decade.
Conceptual foundations of text mining and preprocessing steps nfaoui el_habibEl Habib NFAOUI
This document provides an overview of conceptual foundations and preprocessing steps for text mining. It discusses the differences between syntax and semantics in text, and presents a general framework for text analytics including preprocessing, representation, and knowledge discovery. For text representation, it describes bag-of-words models and vector space models, including frequency vectors, one-hot encoding, and TF-IDF weighting. It also provides an introduction to n-grams for representing sequential data.
This document provides an overview of information retrieval models, including vector space models, TF-IDF, Doc2Vec, and latent semantic analysis. It begins with basic concepts in information retrieval like document indexing and relevance scoring. Then it discusses vector space models and how documents and queries are represented as vectors. TF-IDF weighting is explained as assigning higher weight to rare terms. Doc2Vec is introduced as an extension of word2vec to learn document embeddings. Latent semantic analysis uses singular value decomposition to project documents to a latent semantic space. Implementation details and examples are provided for several models.
Use of ontologies in natural language processingATHMAN HAJ-HAMOU
The document discusses the limitations of classical natural language processing approaches that rely solely on text-based search and statistics. It describes how ontologies can help address these limitations by representing knowledge at the semantic level rather than just words. The document outlines how ontologies can solve problems related to vagueness, high-level concepts, semantic relations, and time dimensions. It then summarizes two research papers that explore using ontologies to index and categorize documents as well as provide multiple views and dimensions to explore a document collection.
This paper proposes Natural language based Discourse Analysis method used for extracting
information from the news article of different domain. The Discourse analysis used the Rhetorical Structure
theory which is used to find coherent group of text which are most prominent for extracting information
from text. RST theory used the Nucleus- Satellite concept for finding most prominent text from the text
document. After Discourse analysis the text analysis has been done for extracting domain related object
and relates this object. For extracting the information knowledge based system has been used which
consist of domain dictionary .The domain dictionary has a bag of words for domain. The system is
evaluated according gold-of-art analysis and human decision for extracted information.
Using ontology for natural language processing can help mediate human-machine communication. Ontologies provide a formal representation of knowledge that can be used in natural language processing. The document discusses how general and specific ontologies can be combined and used with natural language processing techniques like machine translation and speech recognition. It also describes how ontologies can be extended over time using artificial neural networks to improve natural language understanding abilities.
Text Mining is the technique that helps users to find out useful information from a large amount of text documents on the web or database. Most popular text mining and classification methods have adopted term-based approaches. The term based approaches and the pattern-based method describing user preferences. This review paper analyse how the text mining work on the three level i.e sentence level, document level and feature level. In this paper we review the related work which is previously done. This paper also demonstrated that what are the problems arise while doing text mining done at the feature level. This paper presents the technique to text mining for the compound sentences.
A Simple Information Retrieval Techniqueidescitation
The document presents a simple information retrieval technique that involves removing stop words and punctuation from documents, calculating term frequency and inverse document frequency, constructing a master document matrix, and ranking documents based on similarity to user queries. The technique is demonstrated on a sample collection of 5 documents. For a query on "information retrieval system", the documents are ranked from most similar to least similar as document 5, document 1, document 2, document 3, document 4. The technique provides an easy way to search and retrieve relevant documents from a collection.
Text mining efforts to innovate new, previous unknown or hidden data by automatically extracting
collection of information from various written resources. Applying knowledge detection method to
formless text is known as Knowledge Discovery in Text or Text data mining and also called Text Mining.
Most of the techniques used in Text Mining are found on the statistical study of a term either word or
phrase. There are different algorithms in Text mining are used in the previous method. For example
Single-Link Algorithm and Self-Organizing Mapping(SOM) is introduces an approach for visualizing
high-dimensional data and a very useful tool for processing textual data based on Projection method.
Genetic and Sequential algorithms are provide the capability for multiscale representation of datasets and
fast to compute with less CPU time based on the Isolet Reduces subsets in Unsupervised Feature
Selection. We are going to propose the Vector Space Model and Concept based analysis algorithm it will
improve the text clustering quality and a better text clustering result may achieve. We think it is a good
behavior of the proposed algorithm is in terms of toughness and constancy with respect to the formation of
Neural Network.
Information Retrieval System is an effective process that helps a user to trace relevant information by Natural Language Processing (NLP). In this research paper, we have presented present an algorithmic Information Retrieval System(BIRS) based on information and the system is significant mathematically and statistically. This paper is demonstrated by two algorithms for finding out the lemmatization of Bengali words such as Trie and Dictionary Based Search by Removing Affix (DBSRA) as well as compared with Edit Distance for the exact lemmatization. We have presented the Bengali Anaphora resolution system using the Hobbs’ algorithm to get the correct expression of information. As the actions of questions answering algorithms, the TF-IDF and Cosine Similarity are developed to find out the accurate answer from the documents. In this study, we have introduced a Bengali Language Toolkit (BLTK) and Bengali Language Expression (BRE) that make the easiest implication of our task. We have also developed Bengali root word’s corpus, synonym word’s corpus, stop word’s corpus and gathered 672 articles from the popular Bengali newspapers ‘The Daily Prothom Alo’ which is our inserted information. For testing this system, we have created 19335 questions from the introduced information and got 97.22% accurate answer.
COMPREHENSIVE ANALYSIS OF NATURAL LANGUAGE PROCESSING TECHNIQUEJournal For Research
Natural Language Processing (NLP) techniques are one of the most used techniques in the field of computer applications. It has become one of the vast and advanced techniques. Language is the means of communication or interaction among humans and in present scenario when everything is dependent on machine or everything is computerized, communication between computer and human has become a necessity. To fulfill this necessity NLP has been emerged as the means of interaction which narrows the gap between machines (computers) and humans. It was evolved from the study of linguistics which was passed through the Turing test to check the similarity between data but it was limited to small set of data. Later on various algorithms were developed along with the concept of AI (Artificial Intelligence) for the successful execution of NLP. In this paper, the main emphasis is on the different techniques of NLP which have been developed till now, their applications and the comparison of all those techniques on different parameters.
Keyword Extraction Based Summarization of Categorized Kannada Text Documents ijsc
The internet has caused a humongous growth in the number of documents available online. Summaries of documents can help find the right information and are particularly effective when the document base is very large. Keywords are closely associated to a document as they reflect the document's content and act as indices for a given document. In this work, we present a method to produce extractive summaries of documents in the Kannada language, given number of sentences as limitation. The algorithm extracts key words from pre-categorized Kannada documents collected from online resources. We use two feature selection techniques for obtaining features from documents, then we combine scores obtained by GSS (Galavotti, Sebastiani, Simi) coefficients and IDF (Inverse Document Frequency) methods along with TF (Term Frequency) for extracting key words and later use these for summarization based on rank of the sentence. In the current implementation, a document from a given category is selected from our database and depending on the number of sentences given by the user, a summary is generated.
IRJET- Survey for Amazon Fine Food ReviewsIRJET Journal
This document discusses sentiment analysis and summarizes several papers on related topics. It begins with an abstract describing sentiment analysis and its importance. The introduction defines sentiment classification and analysis. The literature survey section summarizes 5 papers on natural language processing and machine learning algorithms for sentiment analysis, including K-means clustering, bag-of-words models, TF-IDF vectorization for document clustering, hierarchical clustering methods, and using naive bayes and SVM for sentiment analysis and text summarization. The conclusion discusses techniques for data processing, natural language processing, and machine learning algorithms covered.
This document discusses the use of fuzzy queries to retrieve information from databases. Fuzzy queries allow for imprecise or vague terms to be used in queries, similar to natural language. The document first provides background on limitations of traditional database queries. It then discusses how fuzzy set theory and membership functions can be applied to queries and data to handle uncertain terms. The proposed approach applies fuzzy queries to a relational database, defining linguistic variables and membership functions. This allows information to be retrieved based on fuzzy criteria and improves the ability to query databases using human-like terms. Benefits of fuzzy queries include more natural interaction and accounting for real-world data imperfections.
Dictionary based concept mining an application for turkishcsandit
In this study, a dictionary-based method is used to extract expressive concepts from documents.
So far, there have been many studies concerning concept mining in English, but this area of
study for Turkish, an agglutinative language, is still immature. We used dictionary instead of
WordNet, a lexical database grouping words into synsets that is widely used for concept
extraction. The dictionaries are rarely used in the domain of concept mining, but taking into
account that dictionary entries have synonyms, hypernyms, hyponyms and other relationships in
their meaning texts, the success rate has been high for determining concepts. This concept
extraction method is implemented on documents, that are collected from different corpora.
This document proposes using Word2Vec and decision trees to extract keywords from textual documents and classify the documents. It reviews related work on keyword extraction and text classification techniques. The proposed approach involves preprocessing text, representing words as vectors with Word2Vec, calculating frequently occurring keywords for each category, and using decision trees to classify documents based on keyword similarity. Experiments using different preprocessing and Word2Vec settings achieved an F-score of up to 82% for document classification.
XAI LANGUAGE TUTOR - A XAI-BASED LANGUAGE LEARNING CHATBOT USING ONTOLOGY AND...ijnlc
In this paper, we proposed a XAI-based Language Learning Chatbot (namely XAI Language Tutor) by using ontology and transfer learning techniques. To facilitate three levels of language learning, XAI Language Tutor consists of three levels for systematically English learning, which includes: 1) phonetics level for speech recognition and pronunciation correction; 2) semantic level for specific domain conversation, and 3) simulation of “free-style conversation” in English - the highest level of language chatbot communication as “free-style conversation agent”. In terms of academic contribution, we implement the ontology graph to explain the performance of free-style conversation, following the concept of XAI (Explainable Artificial Intelligence) to visualize the connections of neural network in bionics, and explain the output sentence from language model. From implementation perspective, our XAI Language Tutor agent integrated the mini-program in WeChat as front-end, and fine-tuned GPT-2 model of transfer learning as back-end to interpret the responses by ontology graph.
All of our source codes have uploaded to GitHub: https://github.com/p930203110/EnglishLanguageRobot
This document summarizes a research paper that proposes and compares fuzzy and Naive Bayes models for detecting obfuscated plagiarism in Marathi language texts. It first provides background on plagiarism detection and describes different types of plagiarism, including obfuscated plagiarism. It then presents the fuzzy semantic similarity model, which uses fuzzy logic rules and semantic relatedness between words to calculate similarity scores between texts. Next, it describes the Naive Bayes model for plagiarism detection using Bayes' theorem. The paper compares the performance of the fuzzy and Naive Bayes models on precision, recall, F-measure and granularity. It finds that the Naive Bayes model provides more accurate detection of obfuscated plagiar
A template based algorithm for automatic summarization and dialogue managemen...eSAT Journals
Abstract This paper describes an automated approach for extracting significant and useful events from unstructured text. The goal of research is to come out with a methodology which helps in extracting important events such as dates, places, and subjects of interest. It would be also convenient if the methodology helps in presenting the users with a shorter version of the text which contain all non-trivial information. We also discuss implementation of algorithms which exactly does this task, developed by us. Key Words: Cosine Similarity, Information, Natural Language, Summarization, Text Mining
This document describes a method for enriching search results using ontology. It begins with an abstract discussing how keyword searches often return irrelevant documents due to the large amount of information available online. It then introduces the concept of using ontology to allow for more sophisticated semantic searches. The paper presents an architecture that augments keyword search results with additional documents that are semantically relevant based on ontology mappings. Documents in the search results are then ranked based on both keyword frequency and semantic relevance to improve search accuracy.
The document discusses text classification and summarization techniques for complex domain-specific documents like research papers. It reviews various preprocessing approaches like stopword removal, lemmatizing, tokenization, and stemming. It also compares different machine learning algorithms for text classification, including Naive Bayes, decision trees, SVM, KNN, and neural networks. The document surveys works analyzing domain-specific documents using these techniques, such as biomedical document relation extraction and research paper topic classification.
Text mining is the process of extracting interesting and non-trivial knowledge or information from unstructured text data. Text mining is the multidisciplinary field which draws on data mining, machine learning, information retrieval, computational linguistics and statistics. Important text mining processes are information extraction, information retrieval, natural language processing, text classification, content analysis and text clustering. All these processes are required to complete the preprocessing step before doing their intended task. Pre-processing significantly reduces the size of the input text documents and the actions involved in this step are sentence boundary determination, natural language specific stop-word elimination, tokenization and stemming. Among this, the most essential and important action is the tokenization. Tokenization helps to divide the textual information into individual words. For performing tokenization process, there are many open source tools are available. The main objective of this work is to analyze the performance of the seven open source tokenization tools. For this comparative analysis, we have taken Nlpdotnet Tokenizer, Mila Tokenizer, NLTK Word Tokenize, TextBlob Word Tokenize, MBSP Word Tokenize, Pattern Word Tokenize and Word Tokenization with Python NLTK. Based on the results, we observed that the Nlpdotnet Tokenizer tool performance is better than other tools.
Phrase Structure Identification and Classification of Sentences using Deep Le...ijtsrd
Phrase structure is the arrangement of words in a specific order based on the constraints of a specified language. This arrangement is based on some phrase structure rules which are according to the productions in context free grammar. The identification of the phrase structure can be done by breaking the specified natural language sentence into its constituents that may be lexical and phrasal categories. These phrase structures can be identified using parsing of the sentences which is nothing but syntactic analysis. The proposed system deals with this problem using Deep Learning strategy. Instead of using Rule Based technique, supervised learning with sequence labelling is done using IOB labelling. This is a sequence classification problem which has been trained and modeled using RNN LSTM. The proposed work has shown a considerable result and can be applied in many applications of NLP. Hashi Haris | Misha Ravi ""Phrase Structure Identification and Classification of Sentences using Deep Learning"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23841.pdf
Paper URL: https://www.ijtsrd.com/engineering/computer-engineering/23841/phrase-structure-identification-and-classification-of-sentences-using-deep-learning/hashi-haris
This document discusses text summarization using machine learning. It begins by defining text summarization as reducing a text to create a summary that retains the most important points. There are two main types: single document summarization and multiple document summarization. Extractive summarization creates summaries by extracting phrases or sentences from the source text, while abstractive summarization expresses ideas using different words. Supervised machine learning approaches use labeled training data to train classifiers to select content, while unsupervised approaches select content based on metrics like term frequency-inverse document frequency. ROUGE is commonly used to automatically evaluate summaries by comparing them to human references. Query-focused multi-document summarization aims to answer a user's information need by summarizing relevant documents
The document discusses two neural network models for reading comprehension tasks: the Attentive Reader model proposed by Herman et al. in 2015 and the Stanford Reader model proposed by Chen et al. in 2016. The author implemented a two-layer attention model inspired by these previous models that achieves a 1.5% higher accuracy on reading comprehension tasks compared to the Stanford Reader.
A NOVEL APPROACH FOR WORD RETRIEVAL FROM DEVANAGARI DOCUMENT IMAGESijnlc
Large amount of information is lying dormant in historical documents and manuscripts. This information would go futile if not stored in digital form. Searching some relevant information from these scanned images would ideally require converting these document images to text form by doing optical character
recognition (OCR). For indigenous scripts of India, there are very few OCRs that can successfully recognize printed text images of varying quality, size, style and font. An alternate approach using word spotting can be effective to access large collections of document images. We propose a word spotting
technique based on codes for matching the word images of Devanagari script. The shape information is utilised for generating integer codes for words in the document image and these codes are matched for final retrieval of relevant documents. The technique is illustrated using Marathi document images.
Importing Data - The Complete Course in All File Types and Data Tricks to Get...Jim Kaplan CIA CFE
Importing Data - The Complete Course in All File Types and Data Tricks to Get Your Data Ready for Analysis
This course will teach you to import, combine, and define various types of data into IDEA SoftwareTM and understand the difference between the tables and implications for the import process.
The specific learning topics are:
Importing a number of different data types and formats
Access the Import Assistant Select the File to Import
File Type
Specify Record Length
Specify Field Delineators
Field Details
Create Fields
Import Criteria
Appending a Virtual Field
Using Data Analytics to Conduct a Forensic AuditFraudBusters
Webinar series from FraudResourceNet LLC on Preventing and Detecting Fraud Using Data Analytics. Recordings of these Webinars are available for purchase from our Website fraudresourcenet.com
This Webinar focused on fraud detection using data analytic software (Excel, ACL, IDEA)
FraudResourceNet (FRN) is the only searchable portal of practical, expert fraud prevention, detection and audit information on the Web.
FRN combines the high quality, authoritative anti-fraud and audit content from the leading providers, AuditNet ® LLC and White-Collar Crime 101 LLC/FraudAware.
The two entities designed FRN as the “go-to”, easy-to-use source of “how-to” fraud prevention, detection, audit and investigation templates, guidelines, policies, training programs (recorded no CPE and live with CPE) and articles from leading subject matter experts.
FRN is a continuously expanding and improving resource, offering auditors, fraud examiners, controllers, investigators and accountants a content-rich source of cutting-edge anti-fraud tools and techniques they will want to refer to again and again.
In this case study discussion formatted course with an already developed Graph template, you’ll learn how to translate unwieldy files of financial data into a single compact scattergraph, pie chart, or overlay—and then to pick out the key items that merit sampling and follow-up. Pivot Charts, multi-axis charts, data label issues, and other graph topics will all be discussed with a unique focus on the audit aspects of graphing.
Graphing is only one piece of this course and starting with Pivots Charts, Pivot Tables can be used to unearth almost any audit finding within seconds. A full discussion of the capabilities of Pivot Tables will be explored with sample data and audit situations.
As regulatory changes sweep the globe, auditors, risk management, and compliance professionals are using more sophisticated tools, and methods.
Using a live/video training library approach, we help companies of all sizes use audit and assurance software to improve business intelligence, increase efficiencies, identify fraud, test controls, and bottom line savings.
AuditNet and Cash Recovery Partners Webinar recording available at auditsoftwarevideos.com and AuditNet.tv (registration required) Recording free to view.
Sample Data Files for All Courses are available for $49
To purchase access to all sample data files, Excel macros and ACL scripts associated with the free training visit AuditSoftwareVideos.
Text mining efforts to innovate new, previous unknown or hidden data by automatically extracting
collection of information from various written resources. Applying knowledge detection method to
formless text is known as Knowledge Discovery in Text or Text data mining and also called Text Mining.
Most of the techniques used in Text Mining are found on the statistical study of a term either word or
phrase. There are different algorithms in Text mining are used in the previous method. For example
Single-Link Algorithm and Self-Organizing Mapping(SOM) is introduces an approach for visualizing
high-dimensional data and a very useful tool for processing textual data based on Projection method.
Genetic and Sequential algorithms are provide the capability for multiscale representation of datasets and
fast to compute with less CPU time based on the Isolet Reduces subsets in Unsupervised Feature
Selection. We are going to propose the Vector Space Model and Concept based analysis algorithm it will
improve the text clustering quality and a better text clustering result may achieve. We think it is a good
behavior of the proposed algorithm is in terms of toughness and constancy with respect to the formation of
Neural Network.
Information Retrieval System is an effective process that helps a user to trace relevant information by Natural Language Processing (NLP). In this research paper, we have presented present an algorithmic Information Retrieval System(BIRS) based on information and the system is significant mathematically and statistically. This paper is demonstrated by two algorithms for finding out the lemmatization of Bengali words such as Trie and Dictionary Based Search by Removing Affix (DBSRA) as well as compared with Edit Distance for the exact lemmatization. We have presented the Bengali Anaphora resolution system using the Hobbs’ algorithm to get the correct expression of information. As the actions of questions answering algorithms, the TF-IDF and Cosine Similarity are developed to find out the accurate answer from the documents. In this study, we have introduced a Bengali Language Toolkit (BLTK) and Bengali Language Expression (BRE) that make the easiest implication of our task. We have also developed Bengali root word’s corpus, synonym word’s corpus, stop word’s corpus and gathered 672 articles from the popular Bengali newspapers ‘The Daily Prothom Alo’ which is our inserted information. For testing this system, we have created 19335 questions from the introduced information and got 97.22% accurate answer.
COMPREHENSIVE ANALYSIS OF NATURAL LANGUAGE PROCESSING TECHNIQUEJournal For Research
Natural Language Processing (NLP) techniques are one of the most used techniques in the field of computer applications. It has become one of the vast and advanced techniques. Language is the means of communication or interaction among humans and in present scenario when everything is dependent on machine or everything is computerized, communication between computer and human has become a necessity. To fulfill this necessity NLP has been emerged as the means of interaction which narrows the gap between machines (computers) and humans. It was evolved from the study of linguistics which was passed through the Turing test to check the similarity between data but it was limited to small set of data. Later on various algorithms were developed along with the concept of AI (Artificial Intelligence) for the successful execution of NLP. In this paper, the main emphasis is on the different techniques of NLP which have been developed till now, their applications and the comparison of all those techniques on different parameters.
Keyword Extraction Based Summarization of Categorized Kannada Text Documents ijsc
The internet has caused a humongous growth in the number of documents available online. Summaries of documents can help find the right information and are particularly effective when the document base is very large. Keywords are closely associated to a document as they reflect the document's content and act as indices for a given document. In this work, we present a method to produce extractive summaries of documents in the Kannada language, given number of sentences as limitation. The algorithm extracts key words from pre-categorized Kannada documents collected from online resources. We use two feature selection techniques for obtaining features from documents, then we combine scores obtained by GSS (Galavotti, Sebastiani, Simi) coefficients and IDF (Inverse Document Frequency) methods along with TF (Term Frequency) for extracting key words and later use these for summarization based on rank of the sentence. In the current implementation, a document from a given category is selected from our database and depending on the number of sentences given by the user, a summary is generated.
IRJET- Survey for Amazon Fine Food ReviewsIRJET Journal
This document discusses sentiment analysis and summarizes several papers on related topics. It begins with an abstract describing sentiment analysis and its importance. The introduction defines sentiment classification and analysis. The literature survey section summarizes 5 papers on natural language processing and machine learning algorithms for sentiment analysis, including K-means clustering, bag-of-words models, TF-IDF vectorization for document clustering, hierarchical clustering methods, and using naive bayes and SVM for sentiment analysis and text summarization. The conclusion discusses techniques for data processing, natural language processing, and machine learning algorithms covered.
This document discusses the use of fuzzy queries to retrieve information from databases. Fuzzy queries allow for imprecise or vague terms to be used in queries, similar to natural language. The document first provides background on limitations of traditional database queries. It then discusses how fuzzy set theory and membership functions can be applied to queries and data to handle uncertain terms. The proposed approach applies fuzzy queries to a relational database, defining linguistic variables and membership functions. This allows information to be retrieved based on fuzzy criteria and improves the ability to query databases using human-like terms. Benefits of fuzzy queries include more natural interaction and accounting for real-world data imperfections.
Dictionary based concept mining an application for turkishcsandit
In this study, a dictionary-based method is used to extract expressive concepts from documents.
So far, there have been many studies concerning concept mining in English, but this area of
study for Turkish, an agglutinative language, is still immature. We used dictionary instead of
WordNet, a lexical database grouping words into synsets that is widely used for concept
extraction. The dictionaries are rarely used in the domain of concept mining, but taking into
account that dictionary entries have synonyms, hypernyms, hyponyms and other relationships in
their meaning texts, the success rate has been high for determining concepts. This concept
extraction method is implemented on documents, that are collected from different corpora.
This document proposes using Word2Vec and decision trees to extract keywords from textual documents and classify the documents. It reviews related work on keyword extraction and text classification techniques. The proposed approach involves preprocessing text, representing words as vectors with Word2Vec, calculating frequently occurring keywords for each category, and using decision trees to classify documents based on keyword similarity. Experiments using different preprocessing and Word2Vec settings achieved an F-score of up to 82% for document classification.
XAI LANGUAGE TUTOR - A XAI-BASED LANGUAGE LEARNING CHATBOT USING ONTOLOGY AND...ijnlc
In this paper, we proposed a XAI-based Language Learning Chatbot (namely XAI Language Tutor) by using ontology and transfer learning techniques. To facilitate three levels of language learning, XAI Language Tutor consists of three levels for systematically English learning, which includes: 1) phonetics level for speech recognition and pronunciation correction; 2) semantic level for specific domain conversation, and 3) simulation of “free-style conversation” in English - the highest level of language chatbot communication as “free-style conversation agent”. In terms of academic contribution, we implement the ontology graph to explain the performance of free-style conversation, following the concept of XAI (Explainable Artificial Intelligence) to visualize the connections of neural network in bionics, and explain the output sentence from language model. From implementation perspective, our XAI Language Tutor agent integrated the mini-program in WeChat as front-end, and fine-tuned GPT-2 model of transfer learning as back-end to interpret the responses by ontology graph.
All of our source codes have uploaded to GitHub: https://github.com/p930203110/EnglishLanguageRobot
This document summarizes a research paper that proposes and compares fuzzy and Naive Bayes models for detecting obfuscated plagiarism in Marathi language texts. It first provides background on plagiarism detection and describes different types of plagiarism, including obfuscated plagiarism. It then presents the fuzzy semantic similarity model, which uses fuzzy logic rules and semantic relatedness between words to calculate similarity scores between texts. Next, it describes the Naive Bayes model for plagiarism detection using Bayes' theorem. The paper compares the performance of the fuzzy and Naive Bayes models on precision, recall, F-measure and granularity. It finds that the Naive Bayes model provides more accurate detection of obfuscated plagiar
A template based algorithm for automatic summarization and dialogue managemen...eSAT Journals
Abstract This paper describes an automated approach for extracting significant and useful events from unstructured text. The goal of research is to come out with a methodology which helps in extracting important events such as dates, places, and subjects of interest. It would be also convenient if the methodology helps in presenting the users with a shorter version of the text which contain all non-trivial information. We also discuss implementation of algorithms which exactly does this task, developed by us. Key Words: Cosine Similarity, Information, Natural Language, Summarization, Text Mining
This document describes a method for enriching search results using ontology. It begins with an abstract discussing how keyword searches often return irrelevant documents due to the large amount of information available online. It then introduces the concept of using ontology to allow for more sophisticated semantic searches. The paper presents an architecture that augments keyword search results with additional documents that are semantically relevant based on ontology mappings. Documents in the search results are then ranked based on both keyword frequency and semantic relevance to improve search accuracy.
The document discusses text classification and summarization techniques for complex domain-specific documents like research papers. It reviews various preprocessing approaches like stopword removal, lemmatizing, tokenization, and stemming. It also compares different machine learning algorithms for text classification, including Naive Bayes, decision trees, SVM, KNN, and neural networks. The document surveys works analyzing domain-specific documents using these techniques, such as biomedical document relation extraction and research paper topic classification.
Text mining is the process of extracting interesting and non-trivial knowledge or information from unstructured text data. Text mining is the multidisciplinary field which draws on data mining, machine learning, information retrieval, computational linguistics and statistics. Important text mining processes are information extraction, information retrieval, natural language processing, text classification, content analysis and text clustering. All these processes are required to complete the preprocessing step before doing their intended task. Pre-processing significantly reduces the size of the input text documents and the actions involved in this step are sentence boundary determination, natural language specific stop-word elimination, tokenization and stemming. Among this, the most essential and important action is the tokenization. Tokenization helps to divide the textual information into individual words. For performing tokenization process, there are many open source tools are available. The main objective of this work is to analyze the performance of the seven open source tokenization tools. For this comparative analysis, we have taken Nlpdotnet Tokenizer, Mila Tokenizer, NLTK Word Tokenize, TextBlob Word Tokenize, MBSP Word Tokenize, Pattern Word Tokenize and Word Tokenization with Python NLTK. Based on the results, we observed that the Nlpdotnet Tokenizer tool performance is better than other tools.
Phrase Structure Identification and Classification of Sentences using Deep Le...ijtsrd
Phrase structure is the arrangement of words in a specific order based on the constraints of a specified language. This arrangement is based on some phrase structure rules which are according to the productions in context free grammar. The identification of the phrase structure can be done by breaking the specified natural language sentence into its constituents that may be lexical and phrasal categories. These phrase structures can be identified using parsing of the sentences which is nothing but syntactic analysis. The proposed system deals with this problem using Deep Learning strategy. Instead of using Rule Based technique, supervised learning with sequence labelling is done using IOB labelling. This is a sequence classification problem which has been trained and modeled using RNN LSTM. The proposed work has shown a considerable result and can be applied in many applications of NLP. Hashi Haris | Misha Ravi ""Phrase Structure Identification and Classification of Sentences using Deep Learning"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23841.pdf
Paper URL: https://www.ijtsrd.com/engineering/computer-engineering/23841/phrase-structure-identification-and-classification-of-sentences-using-deep-learning/hashi-haris
This document discusses text summarization using machine learning. It begins by defining text summarization as reducing a text to create a summary that retains the most important points. There are two main types: single document summarization and multiple document summarization. Extractive summarization creates summaries by extracting phrases or sentences from the source text, while abstractive summarization expresses ideas using different words. Supervised machine learning approaches use labeled training data to train classifiers to select content, while unsupervised approaches select content based on metrics like term frequency-inverse document frequency. ROUGE is commonly used to automatically evaluate summaries by comparing them to human references. Query-focused multi-document summarization aims to answer a user's information need by summarizing relevant documents
The document discusses two neural network models for reading comprehension tasks: the Attentive Reader model proposed by Herman et al. in 2015 and the Stanford Reader model proposed by Chen et al. in 2016. The author implemented a two-layer attention model inspired by these previous models that achieves a 1.5% higher accuracy on reading comprehension tasks compared to the Stanford Reader.
A NOVEL APPROACH FOR WORD RETRIEVAL FROM DEVANAGARI DOCUMENT IMAGESijnlc
Large amount of information is lying dormant in historical documents and manuscripts. This information would go futile if not stored in digital form. Searching some relevant information from these scanned images would ideally require converting these document images to text form by doing optical character
recognition (OCR). For indigenous scripts of India, there are very few OCRs that can successfully recognize printed text images of varying quality, size, style and font. An alternate approach using word spotting can be effective to access large collections of document images. We propose a word spotting
technique based on codes for matching the word images of Devanagari script. The shape information is utilised for generating integer codes for words in the document image and these codes are matched for final retrieval of relevant documents. The technique is illustrated using Marathi document images.
Importing Data - The Complete Course in All File Types and Data Tricks to Get...Jim Kaplan CIA CFE
Importing Data - The Complete Course in All File Types and Data Tricks to Get Your Data Ready for Analysis
This course will teach you to import, combine, and define various types of data into IDEA SoftwareTM and understand the difference between the tables and implications for the import process.
The specific learning topics are:
Importing a number of different data types and formats
Access the Import Assistant Select the File to Import
File Type
Specify Record Length
Specify Field Delineators
Field Details
Create Fields
Import Criteria
Appending a Virtual Field
Using Data Analytics to Conduct a Forensic AuditFraudBusters
Webinar series from FraudResourceNet LLC on Preventing and Detecting Fraud Using Data Analytics. Recordings of these Webinars are available for purchase from our Website fraudresourcenet.com
This Webinar focused on fraud detection using data analytic software (Excel, ACL, IDEA)
FraudResourceNet (FRN) is the only searchable portal of practical, expert fraud prevention, detection and audit information on the Web.
FRN combines the high quality, authoritative anti-fraud and audit content from the leading providers, AuditNet ® LLC and White-Collar Crime 101 LLC/FraudAware.
The two entities designed FRN as the “go-to”, easy-to-use source of “how-to” fraud prevention, detection, audit and investigation templates, guidelines, policies, training programs (recorded no CPE and live with CPE) and articles from leading subject matter experts.
FRN is a continuously expanding and improving resource, offering auditors, fraud examiners, controllers, investigators and accountants a content-rich source of cutting-edge anti-fraud tools and techniques they will want to refer to again and again.
In this case study discussion formatted course with an already developed Graph template, you’ll learn how to translate unwieldy files of financial data into a single compact scattergraph, pie chart, or overlay—and then to pick out the key items that merit sampling and follow-up. Pivot Charts, multi-axis charts, data label issues, and other graph topics will all be discussed with a unique focus on the audit aspects of graphing.
Graphing is only one piece of this course and starting with Pivots Charts, Pivot Tables can be used to unearth almost any audit finding within seconds. A full discussion of the capabilities of Pivot Tables will be explored with sample data and audit situations.
As regulatory changes sweep the globe, auditors, risk management, and compliance professionals are using more sophisticated tools, and methods.
Using a live/video training library approach, we help companies of all sizes use audit and assurance software to improve business intelligence, increase efficiencies, identify fraud, test controls, and bottom line savings.
AuditNet and Cash Recovery Partners Webinar recording available at auditsoftwarevideos.com and AuditNet.tv (registration required) Recording free to view.
Sample Data Files for All Courses are available for $49
To purchase access to all sample data files, Excel macros and ACL scripts associated with the free training visit AuditSoftwareVideos.
Semantic Based Model for Text Document Clustering with IdiomsWaqas Tariq
Text document clustering has become an increasingly important problem in recent years because of the tremendous amount of unstructured data which is available in various forms in online forums such as the web, social networks, and other information networks. Clustering is a very powerful data mining technique to organize the large amount of information on the web. Traditionally, document clustering methods do not consider the semantic structure of the document. This paper addresses the task of developing an effective and efficient method to improve the semantic structure of the text documents. A method has been developed that performs the following: tag the documents for parsing, replacement of idioms with their original meaning, semantic weights calculation for document words and apply semantic grammar. The similarity measure is obtained between the documents and then the documents are clustered using Hierarchical clustering algorithm. The method adopted in this work is evaluated on different data sets with standard performance measures and the effectiveness of the method to develop in meaningful clusters has been proved.
Document clustering for forensic analysis an approach for improving compute...Madan Golla
The document proposes an approach to apply document clustering algorithms to forensic analysis of computers seized in police investigations. It discusses using six representative clustering algorithms - K-means, K-medoids, Single/Complete/Average Link hierarchical clustering, and CSPA ensemble clustering. The approach estimates the number of clusters automatically from the data using validity indexes like silhouette, in order to facilitate computer inspection and speed up the analysis process compared to examining each document individually.
The document discusses algorithmic bias and fairness in data mining. It is divided into four parts: 1) discrimination discovery, 2) fairness-aware data mining, 3) challenges and future directions, and 4) discussion. It also covers introduction and context, sources of bias, legal concepts, measures of discrimination, specific contexts like labor markets, and the relationship between privacy and discrimination.
This document describes a project to develop an intrusion detection system using data mining techniques. It discusses approaches to intrusion detection including signature-based and anomaly-based methods. For the project, a hybrid network-based and host-based intrusion detection system is proposed. Data preprocessing and mining techniques including clustering, outlier detection, and classification are applied to network packet data and system call logs to detect attacks.
This document discusses data mining and forensic auditing. It defines data mining as using computer techniques to analyze large amounts of data to identify patterns and relationships. Data mining can help auditors identify suspicious transactions by analyzing patterns in areas like computer usage, purchases, and employee data. Forensic auditing investigates potential fraud and uses accounting skills and tools to analyze financial information for legal cases. The document outlines different types of fraud, profiles of potential fraudsters, and specialized tools and techniques auditors can use to detect fraud, such as Benford's Law and other Excel functions.
Excel as a potent forensic accounting toolDhruv Seth
This document discusses the use of Excel as a forensic auditing tool. It covers what forensic audits are and how they differ from normal audits. Forensic audits are used to investigate fraud and embezzlement and analyze financial information for legal proceedings. They take a more focused, micro approach compared to standard audits. The document outlines various tools available in Excel for forensic auditing, such as duplicate detection, gap detection, and ratio analysis. It provides examples of how tools like the Ratio of Largest to Second Largest and Benford's Law can help detect errors, fraud, and fudging of financial statements. Limitations of using Excel for forensic audits are also briefly discussed.
Digital forensics is a branch of forensic science encompassing the recovery and investigation of material found in digital devices, often in relation to computer crime. A Pilot study on methodology and complexity of digital forensics and how digital forensics can be applied in a live environment without the loss or spoilage of valuable data and evidence.
1. Easy Solutions is a leading global provider of electronic fraud prevention for financial institutions and enterprise customers, protecting over 75 million users and monitoring over 22 billion online connections in the last 12 months.
2. Alejandro Correa Bahnsen is a data scientist at Easy Solutions who has over 8 years of experience in data science and works on fraud detection and prevention.
3. Fraud analytics uses machine learning and artificial intelligence techniques to analyze customer transaction data and detect patterns that can predict fraudulent transactions from legitimate ones.
Forensic accounting is the application of accounting principles, theories and techniques to facts or hypotheses at issue in a legal dispute and encompasses every phase of litigation services. A forensic accountant uses accounting, auditing and investigative skills to assist in legal matters. This document provides an overview of forensic accounting and forensic auditing, including definitions, the differences between statutory and forensic audits, the approaches and techniques used in forensic audits and the functions of a forensic auditor.
Forensic accounting is a specialized area of accounting that investigates financial fraud and white collar crimes. It has been used for nearly 200 years to assist courts and investigate matters like employee theft, securities fraud, and insurance fraud. Forensic accountants use techniques like cash flow analysis and net worth calculations to detect anomalies and trace missing funds. Their work supports litigation, investigations, and helps protect businesses, banks, and the public from financial deception and crime.
The document discusses using data mining approaches for intrusion detection. It describes current intrusion detection approaches like misuse detection using signatures of known attacks and anomaly detection using deviations from normal behavior profiles. Data mining can help by providing a systematic framework to select relevant audit data features, build and update detection models, and combine multiple models. Relevant techniques include building classifiers from audit data and mining patterns within audit records.
The document provides details about a case study on forensic audit. It discusses what forensic audit is, types of fraud, the fraud triangle model, and the Satyam fraud case. The Satyam case involved falsified financial statements, inflated revenues and profits, fake bank balances and fixed deposits totaling Rs. 7,800 crores. Weak internal controls and governance failures at Satyam such as unethical conduct, false books, dubious roles of directors, auditors and banks allowed the fraud to occur and go undetected for years.
Digital Evidence in Computer Forensic InvestigationsFilip Maertens
The document discusses digital evidence and its importance in investigations. It defines different types of digital evidence and outlines challenges and best practices for acquiring, handling, and preserving digital evidence. Specifically, it covers defining digital evidence, why it is important, challenges involved, general methodologies including seizure practices and safe acquisition methods, and safeguarding digital evidence. The presentation provides guidance to law enforcement on properly obtaining and securing digital evidence.
A project report on Forensic Accounting and AuditingDannyNaik
This document is a project report on forensic accounting and auditing submitted by Durvesh S. Naik to Mulund College of Commerce in Mumbai, India in 2014-2015. It includes an introduction to forensic accounting, definitions, types of frauds, uses of forensic accounting, roles and skills of forensic accountants. It also discusses the increasing need for forensic audits in India due to rising corporate fraud and changes in the Companies Act that require fraud risk management policies. The document provides an overview of the field of forensic accounting and its growing importance in the Indian business environment.
The document discusses the impact of standardized terminologies and domain ontologies in multilingual information processing. It outlines how natural language processing (NLP) techniques can be used to semi-automatically populate ontologies by extracting information from text. Integrating knowledge from ontologies, NLP tools, and subject experts allows for more effective information access and management in an organization.
This document provides a literature review and bibliometric analysis of natural language processing (NLP) applications in library and information science. It identifies 6,607 relevant publications on topics like information retrieval, machine translation, and text summarization. The document analyzes the historical trends, core journals, and prominent publications in the field. It also describes how NLP can enhance bibliometric studies by automating tasks like information extraction from texts. The bibliometric analysis reveals that library and information science is the most prominent subject category for NLP publications, followed by computer science and engineering.
Natural Language Processing Theory, Applications and Difficultiesijtsrd
The promise of a powerful computing device to help people in productivity as well as in recreation can only be realized with proper human machine communication. Automatic recognition and understanding of spoken language is the first step toward natural human machine interaction. Research in this field has produced remarkable results, leading to many exciting expectations and new challenges. This field is known as Natural language Processing. In this paper the natural language generation and Natural language understanding is discussed. Difficulties in NLU, applications and comparison with structured programming language are also discussed here. Mrs. Anjali Gharat | Mrs. Helina Tandel | Mr. Ketan Bagade "Natural Language Processing Theory, Applications and Difficulties" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-6 , October 2019, URL: https://www.ijtsrd.com/papers/ijtsrd28092.pdf Paper URL: https://www.ijtsrd.com/engineering/computer-engineering/28092/natural-language-processing-theory-applications-and-difficulties/mrs-anjali-gharat
A Review Of Text Mining Techniques And ApplicationsLisa Graves
This document provides a review of various text mining techniques and applications. It discusses techniques used for text classification and summarization, including Naive Bayes classification, backpropagation neural networks, keyword matching, and information extraction. It also covers applications of text mining in areas like sentiment analysis of social media posts and hotel reviews. Finally, it discusses the need for organizational text mining to extract useful information and insights from large amounts of unstructured text data.
A DECADE OF USING HYBRID INFERENCE SYSTEMS IN NLP (2005 – 2015): A SURVEYijaia
In today’s world of digital media, connecting millions of users, large amounts of information is being
generated. These are potential mines of knowledge and could give deep insights about the trends of both
social and scientific value. However, owing to the fact that most of this is highly unstructured, we cannot
make any sense of it. Natural language processing (NLP) is a serious attempt in this direction to organise
the textual matter which is in a human understandable form (natural language) in a meaningful and
insightful way. In this, text entailment can be considered a key component in verifying or proving the
correctness or efficiency of this organisation. This paper tries to make a survey of various text entailment
methods proposed giving a comparative picture based on certain criteria like robustness and semantic
precision.
Syracuse UniversitySURFACEThe School of Information Studie.docxdeanmtaylor1545
Syracuse University
SURFACE
The School of Information Studies Faculty
Scholarship
School of Information Studies (iSchool)
2001
Natural Language Processing
Elizabeth D. Liddy
Syracuse University, [email protected]
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Part of the Library and Information Science Commons, and the Linguistics Commons
This Book Chapter is brought to you for free and open access by the School of Information Studies (iSchool) at SURFACE. It has been accepted for
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Recommended Citation
Liddy, E.D. 2001. Natural Language Processing. In Encyclopedia of Library and Information Science, 2nd Ed. NY. Marcel Decker, Inc.
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Natural Language Processing
1
INTRODUCTION
Natural Language Processing (NLP) is the computerized approach to analyzing text that
is based on both a set of theories and a set of technologies. And, being a very active area
of research and development, there is not a single agreed-upon definition that would
satisfy everyone, but there are some aspects, which would be part of any knowledgeable
person’s definition. The definition I offer is:
Definition: Natural Language Processing is a theoretically motivated range of
computational techniques for analyzing and representing naturally occurring texts
at one or more levels of linguistic analysis for the purpose of achieving human-like
language processing for a range of tasks or applications.
Several elements of this definition can be further detailed. Firstly the imprecise notion of
‘range of computational techniques’ is necessary because there are multiple methods or
techniques from which to choose to accomplish a particular type of language analysis.
‘Naturally occurring texts’ can be of any language, mode, genre, etc. The texts can be
oral or written. The only requirement is that they be in a language used by humans to
communicate to one another. Also, the text being analyzed should not be specifically
constru.
A study on the approaches of developing a named entity recognition tooleSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
This document discusses natural language processing (NLP) and its role in augmentative and alternative communication. It begins with introducing NLP as a field of artificial intelligence that aims to allow computers to understand and process human language. It then describes augmentative and alternative communication as methods of non-verbal communication that are useful for those with speech impairments. The document goes on to discuss the different levels of NLP processing from phonology to pragmatics. It also outlines common approaches to NLP, including symbolic and statistical methods. The role of NLP is seen as enabling computerized communication to support augmentative communication.
Natural Language Processing: A comprehensive overviewBenjaminlapid1
Natural language processing enhances human-computer interaction by bridging the language gap. Uncover its applications and techniques in this comprehensive overview. Dive in now!
DataFest 2017. Introduction to Natural Language Processing by Rudolf Eremyanrudolf eremyan
The document discusses Rudolf Eremyan's work as a machine learning software engineer, including several natural language processing (NLP) projects. It provides details on a chatbot Eremyan created for the TBC Bank in Georgia that had over 35,000 likes and facilitated over 100,000 conversations. It also mentions sentiment analysis on Facebook comments and introduces NLP, discussing its history and applications such as text classification, machine translation, and question answering. The document outlines Eremyan's theoretical NLP project involving creating a machine learning pipeline for text classification using a labeled dataset.
Domain Specific Named Entity Recognition Using Supervised ApproachWaqas Tariq
This paper introduces Named Entity Recognition approach for textual corpus. Supervised Statistical methods are used to develop our system. Our system can be used to categorize NEs belonging to a particular domain for which it is being trained. As Named Entities appears in text surrounded by contexts (words that are left or right of the NE), we will be focusing on extracting NE contexts from text and then perform statistical computing on them. We are using n-gram modeling for extracting contexts from text. Our methodology first extracts left and right tri-grams surrounding NE instances in the training corpus and calculate their probabilities. Then all the extracted tri-grams along with their calculated probabilities are stored in a file. During testing, system detects unrecognized NEs in the testing corpus and categorize them using the tri-gram probabilities calculated during training time. The proposed system consists of two modules namely Knowledge acquisition and NE Recognition. Knowledge acquisition module extracts the tri-grams surrounding NEs in the training corpus and NE Recognition module performs the categorization of Named Entities in the testing corpus.
Rule-based Information Extraction from Disease Outbreak ReportsWaqas Tariq
Information extraction (IE) systems serve as the front end and core stage in different natural language programming tasks. As IE has proved its efficiency in domain-specific tasks, this project focused on one domain: disease outbreak reports. Several reports from the World Health Organization were carefully examined to formulate the extraction tasks: named-entities, such as disease name, date and location; the location of the reporting authority; and the outbreak incident. Extraction rules were then designed, based on a study of the textual expressions and elements found in the text that appeared before and after the target text.
The experiment resulted in very high performance scores for all the tasks in general. The training corpora and the testing corpora were tested separately. The system performed with higher accuracy with entities and events extraction than with relationship extraction.
It can be concluded that the rule-based approach has been proven capable of delivering reliable IE, with extremely high accuracy and coverage results. However, this approach requires an extensive, time-consuming, manual study of word classes and phrases.
Semi Automated Text Categorization Using Demonstration Based Term SetIJCSEA Journal
Manual Analysis of huge amount of textual data requires a tremendous amount of processing time and effort in reading the text and organizing them in required format. In the current scenario, the major problem is with text categorization because of the high dimensionality of feature space. Now-a-days there are many methods available to deal with text feature selection. This paper aims at such semi automated text categorization feature selection methodology to deal with a massive data using one of the phases of David Merrill’s First principles of instruction (FPI). It uses a pre-defined category group by providing them with the proper training set based on the demonstration phase of FPI. The methodology involves the text tokenization, text categorization and text analysis.
Jawaharlal Nehru Technological University Natural Language Processing Capston...write5
Natural language processing (NLP) aims to enhance communication between humans and computers. NLP involves developing technologies to analyze, understand, and generate human language. While current NLP systems still face challenges, the field has advanced significantly with increased computing power and large datasets. Key applications of NLP include automatic summarization, machine translation, and named entity recognition. Further research is still needed to improve NLP systems' ability to handle various forms of human communication.
Jawaharlal Nehru Technological University Natural Language Processing Capston...write4
Natural language processing (NLP) aims to enhance communication between humans and computers. NLP involves developing technologies to analyze, understand, and generate human language. While current NLP systems still face challenges, the field has advanced significantly in recent years due to increased computational power and large datasets. Key applications of NLP include automatic summarization, machine translation, and named entity recognition. Further research is still needed to improve NLP systems and make them more reliable and effective for all types of communication.
An Introduction to Text Analytics: 2013 Workshop presentationSeth Grimes
This document provides an introduction to text analytics. It discusses perspectives on text analytics from different roles like IT support, researchers, and solution providers. It explains how text analytics can boost business results by analyzing unstructured text data from sources like emails, social media, surveys etc. It discusses how text analytics transforms information retrieval to information access by extracting semantics, entities, topics and relationships from text. It also provides definitions and explanations of key concepts in text analytics like entities, features, metadata, natural language processing, information extraction, categorization, classification and evaluation metrics.
An Overview Of Natural Language ProcessingScott Faria
This document provides an overview of natural language processing (NLP). It discusses the history and evolution of NLP. It describes common NLP tasks like part-of-speech tagging, parsing, named entity recognition, question answering, and text summarization. It also discusses applications of NLP like sentiment analysis, chatbots, and targeted advertising. Major approaches to NLP problems include supervised and unsupervised machine learning using neural networks. The document concludes that NLP has many applications and improving human-computer interaction through voice is an important area of future work.
A Survey of Ontology-based Information Extraction for Social Media Content An...ijcnes
The amount of information generated in the Web has grown enormously over the years. This information is significant to individuals, businesses and organizations. If analyzed, understood and utilized, it will provide a valuable insight to its stakeholders. However, many of these information are semi-structured or unstructured which makes it difficult to draw in-depth understanding of the implications behind those information. This is where Ontology-based Information Extraction (OBIE) and social media content analysis come into play. OBIE has now become a popular way to extract information coming from machine-readable sources. This paper presents a survey of OBIE, Ontology languages and tools and the process to build an ontology model and framework. The author made a comparison of two ontology building frameworks and identified which framework is complete.
A Comprehensive Study On Natural Language Processing And Natural Language Int...Scott Bou
The document provides a comprehensive overview of natural language processing (NLP) and natural language interfaces to databases (NLIDBs). It discusses the different levels of NLP including morphological, lexical, syntactic, semantic and pragmatic analysis. It also describes various approaches used to develop NLIDBs, including symbolic, empirical, connectionist and maximum entropy approaches. Additionally, it outlines the history of NLP and NLIDBs, covering early work in machine translation and historically developed systems like LUNAR.
Natural Language Processing (NLP) is a subfield of artificial intelligence (AI) and computational linguistics that focuses on enabling computers to understand and interact with human language. It combines techniques from computer science, linguistics, and statistics to bridge the gap between human language and machine understanding. NLP has gained significant attention in recent years due to advancements in AI and the increasing need for machines to process and interpret vast amounts of textual data.
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The Use of Java Swing’s Components to Develop a WidgetWaqas Tariq
Widget is a kind of application provides a single service such as a map, news feed, simple clock, battery-life indicators, etc. This kind of interactive software object has been developed to facilitate user interface (UI) design. A user interface (UI) function may be implemented using different widgets with the same function. In this article, we present the widget as a platform that is generally used in various applications, such as in desktop, web browser, and mobile phone. We also describe a visual menu of Java Swing’s components that will be used to establish widget. It will assume that we have successfully compiled and run a program that uses Swing components.
3D Human Hand Posture Reconstruction Using a Single 2D ImageWaqas Tariq
Passive sensing of the 3D geometric posture of the human hand has been studied extensively over the past decade. However, these research efforts have been hampered by the computational complexity caused by inverse kinematics and 3D reconstruction. In this paper, our objective focuses on 3D hand posture estimation based on a single 2D image with aim of robotic applications. We introduce the human hand model with 27 degrees of freedom (DOFs) and analyze some of its constraints to reduce the DOFs without any significant degradation of performance. A novel algorithm to estimate the 3D hand posture from eight 2D projected feature points is proposed. Experimental results using real images confirm that our algorithm gives good estimates of the 3D hand pose. Keywords: 3D hand posture estimation; Model-based approach; Gesture recognition; human- computer interface; machine vision.
Camera as Mouse and Keyboard for Handicap Person with Troubleshooting Ability...Waqas Tariq
Camera mouse has been widely used for handicap person to interact with computer. The utmost important of the use of camera mouse is must be able to replace all roles of typical mouse and keyboard. It must be able to provide all mouse click events and keyboard functions (include all shortcut keys) when it is used by handicap person. Also, the use of camera mouse must allow users troubleshooting by themselves. Moreover, it must be able to eliminate neck fatigue effect when it is used during long period. In this paper, we propose camera mouse system with timer as left click event and blinking as right click event. Also, we modify original screen keyboard layout by add two additional buttons (button “drag/ drop” is used to do drag and drop of mouse events and another button is used to call task manager (for troubleshooting)) and change behavior of CTRL, ALT, SHIFT, and CAPS LOCK keys in order to provide shortcut keys of keyboard. Also, we develop recovery method which allows users go from camera and then come back again in order to eliminate neck fatigue effect. The experiments which involve several users have been done in our laboratory. The results show that the use of our camera mouse able to allow users do typing, left and right click events, drag and drop events, and troubleshooting without hand. By implement this system, handicap person can use computer more comfortable and reduce the dryness of eyes.
A Proposed Web Accessibility Framework for the Arab DisabledWaqas Tariq
The Web is providing unprecedented access to information and interaction for people with disabilities. This paper presents a Web accessibility framework which offers the ease of the Web accessing for the disabled Arab users and facilitates their lifelong learning as well. The proposed framework system provides the disabled Arab user with an easy means of access using their mother language so they don’t have to overcome the barrier of learning the target-spoken language. This framework is based on analyzing the web page meta-language, extracting its content and reformulating it in a suitable format for the disabled users. The basic objective of this framework is supporting the equal rights of the Arab disabled people for their access to the education and training with non disabled people. Key Words : Arabic Moon code, Arabic Sign Language, Deaf, Deaf-blind, E-learning Interactivity, Moon code, Web accessibility , Web framework , Web System, WWW.
Real Time Blinking Detection Based on Gabor FilterWaqas Tariq
The document proposes a new method for real-time blinking detection based on Gabor filters. It begins by reviewing existing methods and their limitations in dealing with noise, variations in eye shape, and blinking speed. The proposed method uses a Gabor filter to extract the top and bottom arcs of the eye from an image. It then measures the distance between these arcs and compares it to a threshold: a distance below the threshold indicates a closed eye, while a distance above indicates an open eye. The document claims this Gabor filter-based approach is robust to noise, variations in eye shape and blinking speed. It presents experimental results showing the method can accurately detect blinking across different users.
Computer Input with Human Eyes-Only Using Two Purkinje Images Which Works in ...Waqas Tariq
A method for computer input with human eyes-only using two Purkinje images which works in a real time basis without calibration is proposed. Experimental results shows that cornea curvature can be estimated by using two light sources derived Purkinje images so that no calibration for reducing person-to-person difference of cornea curvature. It is found that the proposed system allows usersf movements of 30 degrees in roll direction and 15 degrees in pitch direction utilizing detected face attitude which is derived from the face plane consisting three feature points on the face, two eyes and nose or mouth. Also it is found that the proposed system does work in a real time basis.
Toward a More Robust Usability concept with Perceived Enjoyment in the contex...Waqas Tariq
Mobile multimedia service is relatively new but has quickly dominated people¡¯s lives, especially among young people. To explain this popularity, this study applies and modifies the Technology Acceptance Model (TAM) to propose a research model and conduct an empirical study. The goal of study is to examine the role of Perceived Enjoyment (PE) and what determinants can contribute to PE in the context of using mobile multimedia service. The result indicates that PE is influencing on Perceived Usefulness (PU) and Perceived Ease of Use (PEOU) and directly Behavior Intention (BI). Aesthetics and flow are key determinants to explain Perceived Enjoyment (PE) in mobile multimedia usage.
Collaborative Learning of Organisational KnolwedgeWaqas Tariq
This paper presents recent research into methods used in Australian Indigenous Knowledge sharing and looks at how these can support the creation of suitable collaborative envi- ronments for timely organisational learning. The protocols and practices as used today and in the past by Indigenous communities are presented and discussed in relation to their relevance to a personalised system of knowledge sharing in modern organisational cultures. This research focuses on user models, knowledge acquisition and integration of data for constructivist learning in a networked repository of or- ganisational knowledge. The data collected in the repository is searched to provide collections of up-to-date and relevant material for training in a work environment. The aim is to improve knowledge collection and sharing in a team envi- ronment. This knowledge can then be collated into a story or workflow that represents the present knowledge in the organisation.
Our research aims to propose a global approach for specification, design and verification of context awareness Human Computer Interface (HCI). This is a Model Based Design approach (MBD). This methodology describes the ubiquitous environment by ontologies. OWL is the standard used for this purpose. The specification and modeling of Human-Computer Interaction are based on Petri nets (PN). This raises the question of representation of Petri nets with XML. We use for this purpose, the standard of modeling PNML. In this paper, we propose an extension of this standard for specification, generation and verification of HCI. This extension is a methodological approach for the construction of PNML with Petri nets. The design principle uses the concept of composition of elementary structures of Petri nets as PNML Modular. The objective is to obtain a valid interface through verification of properties of elementary Petri nets represented with PNML.
Development of Sign Signal Translation System Based on Altera’s FPGA DE2 BoardWaqas Tariq
The main aim of this paper is to build a system that is capable of detecting and recognizing the hand gesture in an image captured by using a camera. The system is built based on Altera’s FPGA DE2 board, which contains a Nios II soft core processor. Image processing techniques and a simple but effective algorithm are implemented to achieve this purpose. Image processing techniques are used to smooth the image in order to ease the subsequent processes in translating the hand sign signal. The algorithm is built for translating the numerical hand sign signal and the result are displayed on the seven segment display. Altera’s Quartus II, SOPC Builder and Nios II EDS software are used to construct the system. By using SOPC Builder, the related components on the DE2 board can be interconnected easily and orderly compared to traditional method that requires lengthy source code and time consuming. Quartus II is used to compile and download the design to the DE2 board. Then, under Nios II EDS, C programming language is used to code the hand sign translation algorithm. Being able to recognize the hand sign signal from images can helps human in controlling a robot and other applications which require only a simple set of instructions provided a CMOS sensor is included in the system.
An overview on Advanced Research Works on Brain-Computer InterfaceWaqas Tariq
A brain–computer interface (BCI) is a proficient result in the research field of human- computer synergy, where direct articulation between brain and an external device occurs resulting in augmenting, assisting and repairing human cognitive. Advanced works like generating brain-computer interface switch technologies for intermittent (or asynchronous) control in natural environments or developing brain-computer interface by Fuzzy logic Systems or by implementing wavelet theory to drive its efficacies are still going on and some useful results has also been found out. The requirements to develop this brain machine interface is also growing day by day i.e. like neuropsychological rehabilitation, emotion control, etc. An overview on the control theory and some advanced works on the field of brain machine interface are shown in this paper.
Exploring the Relationship Between Mobile Phone and Senior Citizens: A Malays...Waqas Tariq
There is growing ageing phenomena with the rise of ageing population throughout the world. According to the World Health Organization (2002), the growing ageing population indicates 694 million, or 223% is expected for people aged 60 and over, since 1970 and 2025.The growth is especially significant in some advanced countries such as North America, Japan, Italy, Germany, United Kingdom and so forth. This growing older adult population has significantly impact the social-culture, lifestyle, healthcare system, economy, infrastructure and government policy of a nation. However, there are limited research studies on the perception and usage of a mobile phone and its service for senior citizens in a developing nation like Malaysia. This paper explores the relationship between mobile phones and senior citizens in Malaysia from the perspective of a developing country. We conducted an exploratory study using contextual interviews with 5 senior citizens of how they perceive their mobile phones. This paper reveals 4 interesting themes from this preliminary study, in addition to the findings of the desirable mobile requirements for local senior citizens with respect of health, safety and communication purposes. The findings of this study bring interesting insight to local telecommunication industries as a whole, and will also serve as groundwork for more in-depth study in the future.
Principles of Good Screen Design in WebsitesWaqas Tariq
Visual techniques for proper arrangement of the elements on the user screen have helped the designers to make the screen look good and attractive. Several visual techniques emphasize the arrangement and ordering of the screen elements based on particular criteria for best appearance of the screen. This paper investigates few significant visual techniques in various web user interfaces and showcases the results for better understanding and their presence.
This document discusses the progress of virtual teams in Albania. It provides context on virtual teams and how they differ from traditional teams in their reliance on technology for communication across distances. The document then examines the use of virtual teams in Albania, noting the growing infrastructure and technology usage that enables virtual collaboration. It highlights some virtual team examples in Albanian government and academic projects.
Cognitive Approach Towards the Maintenance of Web-Sites Through Quality Evalu...Waqas Tariq
It is a well established fact that the Web-Applications require frequent maintenance because of cutting– edge business competitions. The authors have worked on quality evaluation of web-site of Indian ecommerce domain. As a result of that work they have made a quality-wise ranking of these sites. According to their work and also the survey done by various other groups Futurebazaar web-site is considered to be one of the best Indian e-shopping sites. In this research paper the authors are assessing the maintenance of the same site by incorporating the problems incurred during this evaluation. This exercise gives a real world maintainability problem of web-sites. This work will give a clear picture of all the quality metrics which are directly or indirectly related with the maintainability of the web-site.
USEFul: A Framework to Mainstream Web Site Usability through Automated Evalua...Waqas Tariq
A paradox has been observed whereby web site usability is proven to be an essential element in a web site, yet at the same time there exist an abundance of web pages with poor usability. This discrepancy is the result of limitations that are currently preventing web developers in the commercial sector from producing usable web sites. In this paper we propose a framework whose objective is to alleviate this problem by automating certain aspects of the usability evaluation process. Mainstreaming comes as a result of automation, therefore enabling a non-expert in the field of usability to conduct the evaluation. This results in reducing the costs associated with such evaluation. Additionally, the framework allows the flexibility of adding, modifying or deleting guidelines without altering the code that references them since the guidelines and the code are two separate components. A comparison of the evaluation results carried out using the framework against published evaluations of web sites carried out by web site usability professionals reveals that the framework is able to automatically identify the majority of usability violations. Due to the consistency with which it evaluates, it identified additional guideline-related violations that were not identified by the human evaluators.
Robot Arm Utilized Having Meal Support System Based on Computer Input by Huma...Waqas Tariq
A robot arm utilized having meal support system based on computer input by human eyes only is proposed. The proposed system is developed for handicap/disabled persons as well as elderly persons and tested with able persons with several shapes and size of eyes under a variety of illumination conditions. The test results with normal persons show the proposed system does work well for selection of the desired foods and for retrieve the foods as appropriate as usersf requirements. It is found that the proposed system is 21% much faster than the manually controlled robotics.
Dynamic Construction of Telugu Speech Corpus for Voice Enabled Text EditorWaqas Tariq
In recent decades speech interactive systems have gained increasing importance. Performance of an ASR system mainly depends on the availability of large corpus of speech. The conventional method of building a large vocabulary speech recognizer for any language uses a top-down approach to speech. This approach requires large speech corpus with sentence or phoneme level transcription of the speech utterances. The transcriptions must also include different speech order so that the recognizer can build models for all the sounds present. But, for Telugu language, because of its complex nature, a very large, well annotated speech database is very difficult to build. It is very difficult, if not impossible, to cover all the words of any Indian language, where each word may have thousands and millions of word forms. A significant part of grammar that is handled by syntax in English (and other similar languages) is handled within morphology in Telugu. Phrases including several words (that is, tokens) in English would be mapped on to a single word in Telugu.Telugu language is phonetic in nature in addition to rich in morphology. That is why the speech technology developed for English cannot be applied to Telugu language. This paper highlights the work carried out in an attempt to build a voice enabled text editor with capability of automatic term suggestion. Main claim of the paper is the recognition enhancement process developed by us for suitability of highly inflecting, rich morphological languages. This method results in increased speech recognition accuracy with very much reduction in corpus size. It also adapts Telugu words to the database dynamically, resulting in growth of the corpus.
An Improved Approach for Word Ambiguity RemovalWaqas Tariq
Word ambiguity removal is a task of removing ambiguity from a word, i.e. correct sense of word is identified from ambiguous sentences. This paper describes a model that uses Part of Speech tagger and three categories for word sense disambiguation (WSD). Human Computer Interaction is very needful to improve interactions between users and computers. For this, the Supervised and Unsupervised methods are combined. The WSD algorithm is used to find the efficient and accurate sense of a word based on domain information. The accuracy of this work is evaluated with the aim of finding best suitable domain of word. Keywords: Human Computer Interaction, Supervised Training, Unsupervised Learning, Word Ambiguity, Word sense disambiguation
Parameters Optimization for Improving ASR Performance in Adverse Real World N...Waqas Tariq
From the existing research it has been observed that many techniques and methodologies are available for performing every step of Automatic Speech Recognition (ASR) system, but the performance (Minimization of Word Error Recognition-WER and Maximization of Word Accuracy Rate- WAR) of the methodology is not dependent on the only technique applied in that method. The research work indicates that, performance mainly depends on the category of the noise, the level of the noise and the variable size of the window, frame, frame overlap etc is considered in the existing methods. The main aim of the work presented in this paper is to use variable size of parameters like window size, frame size and frame overlap percentage to observe the performance of algorithms for various categories of noise with different levels and also train the system for all size of parameters and category of real world noisy environment to improve the performance of the speech recognition system. This paper presents the results of Signal-to-Noise Ratio (SNR) and Accuracy test by applying variable size of parameters. It is observed that, it is really very hard to evaluate test results and decide parameter size for ASR performance improvement for its resultant optimization. Hence, this study further suggests the feasible and optimum parameter size using Fuzzy Inference System (FIS) for enhancing resultant accuracy in adverse real world noisy environmental conditions. This work will be helpful to give discriminative training of ubiquitous ASR system for better Human Computer Interaction (HCI). Keywords: ASR Performance, ASR Parameters Optimization, Multi-Environmental Training, Fuzzy Inference System for ASR, ubiquitous ASR system, Human Computer Interaction (HCI)
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
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Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
Azure Interview Questions and Answers PDF By ScholarHat
The Process of Information extraction through Natural Language Processing
1. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 40
The Process of Information Extraction through Natural Language
Processing
S Acharya sandigdhaacharya@yahoo.co.in
Lecturer/CSE Deptt,
Synergy Institute of Technology
Bhubaneswar,Orissa,India,752101
S Parija smita.parija@gmail.com
Asst.Prof/ECE Deptt,
Synergy Institute of Technology.
Bhubaneswar, Orissa, India, 752101
Abstract
Information Retrieval (IR) is the discipline that deals with retrieval of unstructured data,
especially textual documents, in response to a query or topic statement, which may
itself be unstructured, e.g., a sentence or even another document, or which may be
structured, e.g., a Boolean expression. The need for effective methods of automated IR
has grown in importance because of the tremendous explosion in the amount of
unstructured data, both internal, corporate document collections, and the immense and
growing number of document sources on the Internet.. The topics covered include:
formulation of structured and unstructured queries and topic statements, indexing
(including term weighting) of document collections, methods for computing the similarity
of queries and documents, classification and routing of documents in an incoming
stream to users on the basis of topic or need statements, clustering of document
collections on the basis of language or topic, and statistical, probabilistic, and semantic
methods of analyzing and retrieving documents. Information extraction from text has
therefore been pursued actively as an attempt to present knowledge from published
material in a computer readable format. An automated extraction tool would not only
save time and efforts, but also pave way to discover hitherto unknown information
implicitly conveyed in this paper. Work in this area has focused on extracting a wide
range of information such as chromosomal location of genes, protein functional
information, associating genes by functional relevance and relationships between
entities of interest. While clinical records provide a semi-structured, technically rich data
source for mining information, the publications, in their unstructured format pose a
greater challenge, addressed by many approaches.
Keywords: Natural language Processing(NLP),Information retrieval, Text Zoning
1. INTRODUCTION
Natural Language Processing (NLP) [1]is the computerized approach to analyzing text that is based on
both a set of theories and a set of technologies, and being a very active area of research and
2. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 41
development, there is not a single agreed-upon definition that would satisfy everyone, but there are some
aspects, which would be part of any knowledgeable person’s definition.
Definition: Natural Language Processing is a theoretically motivated range of computational techniques
for analyzing and representing naturally occurring texts at one or more levels of linguistic analysis for the
purpose of achieving human-like language processing for a range of tasks or applications. Several
elements of this definition can be further detailed. Firstly the imprecise notion of ‘range of computational
techniques’ is necessary because there are multiple methods or techniques from which to choose to
accomplish a particular type of language analysis. ‘Naturally occurring texts’ can be of any language,
mode, genre, etc. The texts can be oral or written. The only requirement is that they be in a language
used by humans to communicate to one another. Also, the text being analyzed should not be specifically
constructed for the purpose of the analysis, but rather that the text be gathered from actual usage.
The notion of ‘levels of linguistic analysis’ (to be further explained in Section 2) refers to the fact that there
are multiple types of language processing known to be at work when humans produce or comprehend
language. It is thought that humans normally utilize all of these levels since each level conveys different
types of meaning. But various NLP systems utilize different levels, or combinations of levels of linguistic
analysis, and this is seen in the differences amongst various NLP applications. This also leads to much
confusion on the part of non-specialists as to what NLP really is, because a system that uses any subset
of these levels of analysis can be said to be an NLP-based system. The difference between them,
therefore, may actually be whether the system uses ‘weak’ NLP or ‘strong’ NLP. ‘Human-like language
processing’ reveals that NLP is considered a discipline within Artificial Intelligence (AI). And while the full
lineage of NLP does depend on a number of other disciplines, since NLP strives for human-like
performance, it is appropriate to consider it an AI discipline. ‘For a range of tasks or applications’ points
out that NLP is not usually considered a goal in and of itself, except perhaps for AI researchers. For
others, NLP is the means for 1 Liddy, E. D. In Encyclopedia of Library and Information Science, 2nd Ed.
Marcel Decker, Inc. accomplishing a particular task. Therefore, you have Information Retrieval (IR)
systems that utilize NLP, as well as Machine Translation (MT), Question-Answering, etc. The goal of NLP
as stated above is “to accomplish human-like language processing”. The choice of the word ‘processing’
is very deliberate, and should not be replaced with ‘understanding’. For although the field of NLP was
originally referred to as Natural Language Understanding (NLU) in the early days of AI, it is well agreed
today that while the goal of NLP is true NLU, that goal has not yet been accomplished. A full NLU System
would be able to:
1. Paraphrase an input text
2. Translate the text into another language
3. Answer questions about the contents of the text
4. Draw inferences from the text
While NLP has made serious inroads into accomplishing goals 1 to 3, the fact that NLPsystems cannot, of
themselves, draw inferences from text, NLU still remains the goal of NLP. There are more practical goals
for NLP, many related to the particular application for which it is being utilized. For example, an NLP-
based IR system has the goal of providing more precise, complete information in response to a user’s
real information need. The goal of the NLP system here is to represent the true meaning and intent of the
user’s query, which can be expressed as naturally in everyday language as if they were speaking to a
reference librarian. Also, the contents of the documents that are being searched will be represented at all
their levels of meaning so that a true match between need and response can be found, no matter how
either are expressed in their surface form.
2. INFORMATION EXTRACTION
What is Information Extraction?
This volume takes a broad view of information extraction [2] as any method for filtering information from
large volumes of text. This includes the retrieval of documents from collections and the tagging of
particular terms in text. In this paper we shall use a narrower definition: the identification of instances of a
3. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 42
particular class of events or relationships in a natural language text, and the extraction of the relevant
arguments of the event or relationship. Information extraction there- fore involves the creation of a
structured representation (such as a data base) of selected information drawn from the text.
The idea of reducing the information in a document to a tabular structure is not new. Its feasibility for
sublanguage texts was suggested by Zellig Harris in the 1950's, and an early implementation for medical
texts was done at New York University by Naomi Sager [5]. However, the specific notion of information
extraction described here has received wide currency over the last decade through the series of Message
Understanding Conferences [1, 2, 3, 4, 14].We shall discuss these Conferences in more detail a bit later,
and shall use simplified versions of extraction tasks from these Conferences as examples throughout this
paper the type of attack (bombing, arson, etc.), the date, location, perpetrator (if stated), targets, and
effects on targets. Other examples of extraction tasks are international joint ventures (where the
arguments included the partners, the new venture, its product or service, etc.) and executive succession
(indicating who was hired or _red by which company for which position).
Information extraction is a more limited task than full text understanding". In full text understanding, we
aspire to represent in a explicit fashion all the information in a text. In contrast, in information extraction
we delimit in advance, as part of the specification of the task, the semantic range of the output: the
relations we will represent, and the allowable _leers in each slot of a relation. Identify specific pieces of
information (data) in a unstructured or semi-structured textual document. Transform unstructured
information in a corpus of documents or web pages into a structured database.
Applied to different types of text:
–Newspaper articles
–Web pages
–Scientific articles
–Newsgroup messages
–Classified ads
–Medical notes
In many application areas of text analysis, for instance, in information retrieval and in text mining, shallow
representations of texts have been recently widely used. In in- formation retrieval, such shallow
representations allow for a fast analysis of the in- formation and a quick respond to the queries. In text
mining, such representations are used because they are easily extracted from texts and easily analyzed.
Recently in all text-oriented applications, there is a tendency to begin using more complete
representations of texts than just keywords, i.e., the representations with more types of textual elements.
For instance, in information retrieval, these new representations increase the precision of the results; in
text mining, they ext end the kinds of discovered knowledge.Many web pages are generated
automatically from an underlying database. Therefore, the HTML structure of pages is fairly specific and
regular However, output is intended for human consumption, not machine interpretation. An IE system
for such generated pages allows the web site to be viewed as a structured database.
2.1 Techniques of Information Retrival
2.1.1 Text Zoning
Turns a text into a set of useful text segment(like headers,paragraphs,table) May be topic based using
keywords or static. Depends on the structure of the text in domain of application. Discard unwanted
segment of text.
2.1.2 Preprocessing
Take as input a stream of characters carried out tokenisation & sentence segmentations(convert txt
segment into a sequence of sentence,disambiguaten fullstop) Part-of-speech tagging.named entity,
spelling correction has been carried out.
4. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 43
2.1.3 Filtering
Throws away sentences considered to be irrelevant.Primary consideration is processing time[31,32].
Relevance decision can use manually or statisticallyderived keywords.
2.1.4 Preparsing
Ingoing from a sequence of words to a parse tree, some structure can be identify more reliably than
other( noun,prepositional phrases,appositives) Uses finite state grammar & special word list.
2.1.5 Name recognition entity
Name may contain unknown words Identify of names simplify parsing. IE templates slots are typically
filled with name.
Temporalexpreexpression(time,date,duration).Numberexpression(number,money,measure,sped,volume,t
emprature,percentage,cardinal).Simpleregularexpression(postalcode,studentid,telephoneno.)Entityname
(person,organization,location)
2.1.6 Parsing
Takes as inputa sequence of lexical items and smallscale structure built by the parser.Produce as output
a set of parse tree fragments, correspond to subsentential unit.Goal is to detrmine the major elements in
the sentence (nounphrase,verbphrase)
2.1.7 Fragment combination
Take as input a set of parse tree fragments derived from a sentences.Tries to combine fragments into a
representation for he entire sentence[6].
2.1.9 Semantic interpretation
Generate a semantic structure or logical form or event frame from a parse tree or a collection of parse
tree fragment. What is a semantic structure An explicit representation of the relationship between
participant in sentence. Goal is to map syntatic structure into structure that encode information relevance
template filling[7].
2.1.10 Lexical disambiguation
Turns a semantic structure with ambigous predicate into unambigous predicate.This task may be carried
out in a number of places in a system.In restricted domains this may not be an issue –the one sense per
document assumption. Only one sense of the word is used in the complete domain.
2.1.11 Coreference Resolution
• Identify different description of he same entity in different parts of text and relates them in some way.
identify,meronymy.,reference to events.
• Techniques number & gender agreement for pronoun(Ram met Shyam,he later stated.) semantic
consistency based on taxonomic information(toyota motor corp.”the japenese automoter”.) some
notion of focus(pronoun typically refer to something mentioned in the previous sentence).
2.1.12Template generation
Derive final output templates from the semantic structures.Carries out lowlevel formatting and
normalization of data.
2.1.13 Evaluations
Precision=Ncorrect/Nresponse,
Recall=Ncorrect/Nkey
F= (2*precision*recall)/(precision+recall)
5. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 44
3. OBSERVATIONS
3.1. Strengths of SVM
• the solution is unique
• the boundary can be determined only by its support vectors, namely SVM[33] is robust against
changes of all vectors but its support vectors
• SVM is insensitive to small changes of the parameters different SV classifiers constructed by using
different kernels (polynomial, RBF, neural net) extract the same support Vectors.
Weaknesses of SVM
• It takes more time.
• SVM is used only for categorization of documents and user feedback
3.2 Conceptual Graph:
• It is more accurate than other two model.
• structured semantic matching can improve both recall and precision
• . Each relation associated with the entry induces a subgraph
• There are many graph to derive.
3.3 Boolean Retrieval:
• Process large document quickly.
• Allow more flexible matching.
• Need invarted index files.
• Used more memory space.
• More time take to access
Standard Boolean
Goal • capture Conceptual structure and Contextual
Information
Methods • Coordination:AND,OR,NOT
• Proximity
• Fields
• Stemming/Truncation
(+) • Easy to implement
• Computationally Efficient
=all the major online databases use it.
• Expressiveness and Clarity
Synonm specifications (OR –Clauses) and phrases
(AND –Clauses)
(-) • Difficult to Construct Boolean queries
• All or Nothing.
ANDBtoo severe ,and OR does not differentiate
Enough
• .Difficult to control output:Null output↔Overload.
• No Ranking.
• No weighting of index or query terms.
• No uncertainty measure.
FIGURE 1. Boolean Retrieval
6. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 45
Parameters Boolean Retrieval Conceptual Graph SVM
Types of Solution More solutions More solutions Unique Solutions
Data Types Linear Documents Linear Documents Multidimensional
data
Performance More accurate Most accurate than
other two models
More accurate
Evaluation Simple Simple More complex
Space Complexity Uses more memory Uses more memory Uses less memory
Efficiency Retrieves large
documents quickly
Retrieval of
information
Categorization of
documents
FIGURE 2. Comparision Study.
4. SURVEY ON PAPERS:
4.1 Paper1
The combined use of linguistic ontologies and structured semantic matching is one of the promising ways
to improve both recall and precision. In this paper, we propose an approach for semantic search by
matching conceptual graphs. The detailed definitions of semantic similarities between concepts, relations
and conceptual graphs are given. According to these definitions of semantic similarity, we propose our
conceptual graph matching algorithm that calculates the semantic similarity. The computation complexity
of this algorithm is constrained to be polynomial. A prototype of our approach is currently under
development with IBM China Research Lab
4.1 Paper2
As defined in this way, information retrieval used to be an activity that only a few people engaged in:
reference librarians, paralegals, and similar professional searchers. Now the world has changed, and
hundreds of millions of people engage in information retrieval every day when they use a web search
engine or search their email.1 Information retrieval is fast becoming the dominant form of information
access, overtaking traditional database style searching (the sort that is going on when a clerk says to you:
“I’m sorry, I can only look up your order if you can give me your order ID”). Information retrieval can also
cover other kinds of data and information problems beyond that specified in the core definition above. The
term “unstructured data” refers to data that does not have clear, semantically overt, easy-for-a-computer
structure. It is the opposite of structured data, the canonical example of which is a relational database, of
the sort companies usually use to maintain product inventories and personnel records. In reality, almost
no data are truly “unstructured.” This is definitely true of all text data if you count the latent linguistic
structure of human languages. But even accepting that the intended notion of structure is overt structure,
most text has structure, such as headings, paragraphs, and footnotes, which is commonly represented in
documents by explicit markup (such as the coding underlying web pages). Information retrieval is also
used to facilitate “semi structured”. search such as finding a document where the title contains Java and
the body contains threading. The field of IR also covers supporting users in browsing or filtering document
7. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 46
collections or further processing a set of retrieved documents. Given a set of documents, clustering is the
task of coming up with a good grouping of the documents based on their contents. It is similar to
arranging books on a bookshelf according to their topic. Given a set of topics, standing information needs,
or other categories (such as suitability of texts for different age groups), classification is the task of
deciding which class(es), if any, each of a set of documents belongs to. It is often approached by first
manually classifying some documents and then hoping to be able to classify new documents
automatically. Information retrieval systems can also be distinguished by the scale at which they operate,
and it is useful to distinguish three prominent scales. In web search, the system has to provide search
over billions of documents stored on millions of computers. Distinctive issues are needing to gather
documents for indexing, being able to build systems that work efficiently at this enormous scale, and
handling particular aspects of the web, such as the exploitation of hypertext and not being fooled by site
providers manipulating page content in an attempt to boost their search engine rankings, given the
commercial importance of the web. We focus on all these issues in
Chapters 19–21. At the other extreme is personal information retrieval. In the last few years,
consumer operating systems have integrated information retrieval (such as Apple’s Mac OS X Spotlight or
Windows Vista’s Instant Search). Email programs usually not only provide search but also text
classification: they at least provide a spam (junk mail) filter, and commonly also provide either manual or
automatic means for classifying mail so that it can be placed directly into particular folders. Distinctive
issues here include handling the broad range of document types on a typical personal computer, and
making the search system maintenance free and sufficiently lightweight in terms of startup, processing,
and disk space usage that it can run on one machine without annoying its owner. In between is the space
of enterprise, institutional, and domain-specific search, where retrieval might be provided for collections
such as a corporation’s internal documents, a database of patents, or research articles on biochemistry.
In this case, the documents are typically stored on centralized file systems and one or a handful of
dedicated machines provide search over the collection. This book contains techniques of value over this
whole spectrum, but our coverage of some aspects of parallel and distributed search in web-scale search
systems is comparatively light owing to the relatively small published literature on the details of such
systems. However, outside of a handful of web search companies, a software developer is most likely to
encounter the personal search and enterprise scenarios. In this chapter, we begin with a very simple
example of an IR problem,Central inverted index data structure.We then examine the Boolean retrieval
model and how Boolean queries are processed .
An example information retrieval problem
A fat book that many people own is Shakespeare’s Collected Works. Suppose you wanted to determine
which plays of Shakespeare contain the words Brutus and Caesar and not Calpurnia. One way to do that
is to start at the beginning and to read through all the text, noting for each play whether it contains Brutus
and Caesar and excluding it from consideration if it contains Calpurnia. The simplest form of document
retrieval is for a computer to do this sort of linear scan through documents. This process is commonly
grep referred to as grepping through text, after the Unix command grep, which performs this process.
Grepping through text can be a very effective process, especially given the speed of modern computers,
and often allows useful possibilities for wildcard pattern matching through the use of regular expressions.
With modern computers, for simple querying of modest collections (the size of Shakespeare’s
Collected Works is a bit under one million words of text in total), you really need nothing more. But for
many purposes, you do need more 1. To process large document collections quickly. The amount of
online data has grown at least as quickly as the speed of computers, and we would now like to be able to
search collections that total in he order of billions to trillions of words. 2. To allow more flexible matching
operations.
5. CONCLUSION
After the survey of these two[33,34] papers we observed that the above models provides the best match.
But we need the exact match for Information Extraction. Hence there is a further need of another model
which should provide the exact match .The paper presented two approaches to extracting information
Structures. While the manual approach is more accurate and can be engineered in a domain specific
8. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 47
way, the automated approach is also advantageous because of its scalability.Our evaluation of the
automated system on both the BioRAT[25] and GeneWays[23] datasets shows that our system performs
comparably with other existing systems. Both the systems compared were built by manual rule
engineering approach, and involve a repetitive process of improving the rules which take up a lot of effort
and time. Our system is able to achieve similar results with minimal effort on part of the developer and
user. While advantageous on this aspect, we realize that our system is also in need of improvements in
tagging entities to boost the performance. Improvements in the interaction extractor module will also bring
up the precision of the system. Nevertheless, we have proven that a syntactic analysis of the sentence
structure from full sentence parses produces results comparable to many of the existing systems for
interaction extraction[[29,30].
Semantic matching has been raised for years to improve both recall and precision of information
retrieval.[9,14] finds first the most similar entities and then observe the correspondence of involved
relationship. However, with this kind of simplification, matching on nodes is separate without the
organization of sub graphs. In contrary, we try to retain sub graph structure in our matching procedure
with as less cost as possible. OntoSeek [8,13] defines the match on isomorphism between query graph
and a sub graph of resource graph where the labels of resource graph should be subsumed by the
corresponding ones of query graph. The strict definition of match makes their system can’t support partial
matching. The assumption that user would encode the resource descriptions by hand also limits its
popularization. Different from it, our method not only supports the partial matching but also introduces the
weight to reflect user’s preferences, which makes our method more flexible. Some previous work have
discussed the issue of semantic distance, such as [5] [14] and [15]. The basic thought is to define the
distance between two concepts as the number of arcs in the shortest path between two concepts in the
concept hierarchy which does not pass through the absurd type. [14] modified the definition and defined
the distance as the sum of the distances from each concept to the least concept which subsumes the two
given concepts. We adopt their original thought and make some modifications to make it suitable to our
work.
The measurement of concept similarity was also studied before. [17] builds their similarity definition on
the information interests shared by different concepts, while [16] defines the similarity between two
concepts as the information content (entropy) of their closest common parent, and besides take the
density in different parts of the ontology into account. The measuring of concept similarity in our approach
is different from them and is simpler. Of course, our approach is far from perfect. It needs further study
based on collected experiment data in the future .Now a days, with the electronic information explosion
caused by Internet, increasingly diverse information is available. To handle and use such great amount of
information, improved search engines are necessary. The more information about documents is
preserved in their formal representation used for information retrieval, the better the documents can be
evaluated and eventually retrieved. Based on these ideas, we are developing a new information retrieval
system. This system performs the document selection taking into account two different levels of document
representation. The first level is the traditional keyword document representation. It serves to select all
documents potentially related to the topic(s) mentioned in the user’s query. The second level is formed
with the conceptual graphs[20,21,22] reflecting some document details, for instance, the document
intention. This second level complements the topical information about the documents and provides a
new way to evaluate the relevance of the document for the query. the query and extracts from it a list of
topics (keywords). The keyword search finds all relevant documents for such a keyword-only query. Then,
the information extraction module constructs the conceptual graphs of the query and the retrieved
documents, according to the process described in section 3. This information is currently extracted from
titles [10] and abstracts [11] of the documents. These conceptual graphs describe mainly the intention of
the document, but they can express other type of relations, such as cause-effect relations [12,13].
This graph indicates that the document in question has the intention of demonstrating the validity of the
technique Then the query conceptual graph is compared – using the method described in this paper –
with the graphs for the potentially relevant documents. The documents are then ordered by their value s
of the similarity to the query. After this process the documents retrieved at the beginning of the list will not
only mention the key-topics expressed in the query, but also describe the intentions specified by the user.
This technique allows improving the retrieval of information in two main directions:
9. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 48
1.It permits to search the information using not only topical information, but also extratopical, for instance,
the document intentions.
2. It produces a better raking of those documents closer to the user needs, not only in terms of subject.
We have described the structure of an information retrieval system that uses the comparison of the
document and the query represented with conceptual graphs to improve the precision of the retrieval
process by better ranking on the results. In particular, we have described a method for measuring the
similarity between conceptual graph representations of two texts. This method incorporates some well-
known characteristics, for instance, the idea of the Dice coefficient – a widely used measure of similarity
for the keyword representations of texts. It also incorporates some new characteristics derived from the
conceptual graph structure, for instance, the combination of two complementary sources of similarity: the
conceptual similarity and the relational similarity. This measure is appropriate for text comparison
because it considers not only the topical aspects of the phrases (difficult to obtain from short texts) but
also the relationships between the elements mentioned in the texts. This approach is especially good for
short texts. Since in information retrieval, in any comparison operation at least one of the two elements,
namely, the query, is short, our method is relevant for information retrieval. Currently, we are adapting this
measure to use a concept hierarchy given by the user, i.e. an is-a hierarchy, and to consider some
language phenomena as, for example, synonymy. However, the use of the method of comparison of the
texts using their conceptual graph representations is not limited by information retrieval. Other uses of the
method include text mining and document classification.
The information extraction system based on complex sentence processing is able to handle binary
relations between genes and proteins, and some nested relations. However, researchers are also
interested in contextual information such as the location and agents for the interaction and the signaling
pathways of which these interactions are a part. Our tasks for future work include the following
• Handling negations in the sentences (such as ”not interact”, ”fails to induce”, ”does not inhibit”)
• Identification of relationships among interactions extracted from a collection of simple sentences
(such as one interaction stimulating or inhibiting another)
• Extraction of detailed contextual attributes (such as bio-chemical context or location) of
interactions and
• Building a corpus of biomedical abstracts and extracted interactions that might serve as a
benchmark for related extraction systems. Attempts to improve the parse output of the Link
Grammar System were also undertaken. The dictionaries of the Link Grammar Parser[18] were
augmented with medical terms with their linking to polynomial.
Before discussing the complexity of the algorithm, we firstly consider the effect caused by cycles in
requirements provided by Szolovit in his website. In spite of the improvement in performance of the Link
Grammar Parser, this approach was discontinued in favor of the Pre-processor subsystem because of the
increase in time taken to load the dictionaries and for parsing. Semantic[24] analysis based on proposed
information extraction techniques would enable automated extraction of detailed gene-gene relationships,
their contextual attributes and potentially an entire history of possibly contradictory sub-pathway theories
from biomedical abstracts in PubMed thus allowing our system to generate more relevant and detailed
recommendations. When applying graph matching algorithm, the greatest worry comes about the
computation complexity, since it is well known that Maximum Sub graph Matching is a NP-complete
problem. Fortunately, it can be expected in our algorithm that the computation complexity will be
constrained graphs to our algorithm. Since the algorithm is recursive, the cycle in graph will lead to an
unending recursion and will be fatal to our algorithm. So we must eliminate the cycles in graphs before we
match them. We can handle it simply by duplicating the concept in cycles. Surely, this will increase the
computation complexity, especially when the cycle is very complex. Fortunately, benefiting from the
domain specific characters, cycles in graphs are very rare especially in commodity domain. So we ignore
it here.In the following, we will discuss the complexity of our algorithm. Since cycles in graphs are very
rare and the cycles can be eliminated simply, we will only concern the tree structure. Without losing
generality, we can suppose that the query graph and the resource graph contain n arcs each and are
both l-branch trees of i height, so there are more than li relations. We use C(i) to denote the time
10. Sandigdha Acharya & Smita Parija.
International Journal of Logic and Computation (IJLP), Volume (1): Issue (1) 49
complexity of matching two trees both of i height. As shown in the algorithm, we will calculate the
similarity between the two entries firstly We use a constant c to represent the time spent in calculating
concept similarity. After this step, the time complexity is c; then we need to calculate the similarity
between each sub graph pair. Since each entry will induce l sub graphs we need l2 times recursive
invocations. These sub graphs are all l-branch trees of i-1 height, so in every invocation, the time
complexity is C(i-1). Here we ignore the time to calculate similarity between relations. After these two
loops, the time complexity will be c+l2*C(i-1). Once we determine the similarity between each sub graph
pair, we should find out the best match from different mate combinations There exists l! combinations in
these l2 sub graph pairs, so how to handle it efficiently is important. We translate the issue into a
maximum flow problem and execute Bellman-Ford[26] algorithm l times to solve it4, whose computation
complexity is l3, and the cumulative complexity is l4. So the complexity can be described as follows: From
the formula, we can see that C(i) is about l2i+2. Generally, when l is not very small, the number of arcs n
will approximate li, so the complexity will be n2l2. If l<<n, the complexity will be O(n2). For the worst case,
suppose there is only 1 layer in the query graph, i.e. l=n, the complexity is O(n4). Since the algorithm
combines syntactic and semantic context information in the whole process[27,28],the advantages over
traditional keyword match technique can easily be seen. For example, a description is about ‘soft collar
shirt’ and another is about ‘soft shirt with straight collar’. They are both selected by keyword search when
using ‘soft 4 InThe initial observation in this paper is that binary decisions are not good enough for
ontology evaluation, when hierarchies are involved. We propose an Augmented Precision and Recall
measure that takes into account the ontological distance of the response to the position of the key
concepts in the hierarchy.
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