Natural Language Processing (NLP) & Text Mining Tutorial Using NLTK | NLP Training | Edureka

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** NLP Using Python: - https://www.edureka.co/python-natural-language-processing-course ** This Edureka PPT will provide you with a comprehensive and detailed knowledge of Natural Language Processing, popularly known as NLP. You will also learn about the different steps involved in processing the human language like Tokenization, Stemming, Lemmatization and much more along with a demo on each one of the topics. The following topics covered in this PPT: 1. The Evolution of Human Language 2. What is Text Mining? 3. What is Natural Language Processing? 4. Applications of NLP 5. NLP Components and Demo Follow us to never miss an update in the future. Instagram: https://www.instagram.com/edureka_learning/ Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka

Technology

Natural Language Processing with Python Certification Course www.edureka.co

Natural Language Processing with Python Certification Course www.edureka.co
Text Mining
&
NLP

Natural Language Processing with Python Certification Course www.edureka.co
Today’s Training Topics
❖ Evolution of Human Language
❖ What is Text Mining?
❖ Text Mining and Natural Language Processing?
❖ Applications of NLP
❖ NLP Components and Demo

Natural Language Processing with Python Certification Course www.edureka.co
The Human Language
LANGUAGE
ALPHABETS
字母 वर्णमाला
ALFABETOS
‫األبجدية‬ எழுத்துக்கள்

Natural Language Processing with Python Certification Course www.edureka.co
The 21st Century
21 %
STRUCTURED
DATA

Natural Language Processing with Python Certification Course www.edureka.co
The 21st Century
STRUCTURED
DATA21 %
Unstructured

Natural Language Processing with Python Certification Course www.edureka.co
What is Text Mining ?
Text Mining / Text Analytics is the process of deriving
meaningful information from natural language text

Natural Language Processing with Python Certification Course www.edureka.co
Text Mining and NLP
As, Text Mining refers to
the process of deriving high quality
information from the text .
The overall goal is, essentially to turn
text into data for analysis, via
application of Natural Language
Processing (NLP)

Natural Language Processing with Python Certification Course www.edureka.co
What is NLP?
NLP: Natural Language Processing is a part of computer science
and artificial intelligence which deals with human languages.

Natural Language Processing with Python Certification Course www.edureka.co
Basic Structure of a NLP Application

Natural Language Processing with Python Certification Course www.edureka.co
Applications of NLP
Sentimental
Analysis
Speech
Recognition
Chatbot
Machine
Translation

Natural Language Processing with Python Certification Course www.edureka.co
Applications of NLP and Text Mining
Spell
Checking
Keyword
Search
Information
Extraction
Advertisement
Matching

Natural Language Processing with Python Certification Course www.edureka.co
NLP : Components

Natural Language Processing with Python Certification Course www.edureka.co
NLP : Components
Natural Language
Understanding
Natural Language
Generation

Natural Language Processing with Python Certification Course www.edureka.co
NLP : Ambiguity
Natural Language
Understanding
Lexical Ambiguity
Syntactic Ambiguity
Referential Ambiguity

Natural Language Processing with Python Certification Course www.edureka.co
NLU : Ambiguity
Lexical Ambiguity
Syntactic Ambiguity
Referential Ambiguity
She is looking for a match.
The fisherman went to the bank.

Natural Language Processing with Python Certification Course www.edureka.co
NLTK

Natural Language Processing with Python Certification Course www.edureka.co
NLTK
NLTK

Natural Language Processing with Python Certification Course www.edureka.co
Tokenization
01 Break a complex sentence into words
02 Understand the importance of each of the words with respect to the
sentence
03 Produce a structural description on an input sentence
Tokenization is the first step in NLP

Natural Language Processing with Python Certification Course www.edureka.co
Tokenization

Natural Language Processing with Python Certification Course www.edureka.co
Stemming
Affectation Affected Affection AffectingAffectionsAffects
Normalize words into its base form or root form

Natural Language Processing with Python Certification Course www.edureka.co
Stemming
Affect
Normalize words into its base form or root form

Natural Language Processing with Python Certification Course www.edureka.co
• Groups together different inflected forms of a
word, called Lemma
• Somehow similar to Stemming, as it maps
several words into one common root
• Output of Lemmatisation is a proper word
• For example, a Lemmatiser should
map gone, going and went into go
Lemmatization

Natural Language Processing with Python Certification Course www.edureka.co
Stop Words
Are they Helpful or Not

Natural Language Processing with Python Certification Course www.edureka.co
POS : Parts of Speech

Natural Language Processing with Python Certification Course www.edureka.co
POS : Tags and Descriptions

Natural Language Processing with Python Certification Course www.edureka.co
POS : Examples
The Dog killed the bat
DT NN VBD DT NN
SENTENCE

Natural Language Processing with Python Certification Course www.edureka.co
What are Named Entity Recognition ?
MOVIE
LOCATION
MONETARY VALUE
QUANTITIES
ORGANIZATION
PERSON

Natural Language Processing with Python Certification Course www.edureka.co
NER : Named Entity Recognition
Google’s CEO Sundar Pichai introduced the new Pixel at Minnesota Roi Centre Event
Organization Person Location Organization

Natural Language Processing with Python Certification Course www.edureka.co
Syntax

Natural Language Processing with Python Certification Course www.edureka.co
Phase Structure Rules

Natural Language Processing with Python Certification Course www.edureka.co
Syntax Tree
Syntax Tree is a tree representation of syntactic
structure of sentences or strings

Natural Language Processing with Python Certification Course www.edureka.co
Chunking
Picking up Individual pieces of Information and Grouping them into bigger Pieces
CHUNK

Natural Language Processing with Python Certification Course www.edureka.co
Chunking
CHUNKs
PRP VBD DT JJ NN
NP NP
We Caught the Black Panther

Natural Language Processing (NLP) & Text Mining Tutorial Using NLTK | NLP Training | Edureka

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( **Natural Language Processing Using Python: - https://www.edureka.co/python-natural... ** ) This PPT will provide you with detailed and comprehensive knowledge of the two important aspects of Natural Language Processing ie. Stemming and Lemmatization. It will also provide you with the differences between the two with Demo on each. Following are the topics covered in this PPT: Introduction to Big Data What is Text Mining? What is NLP? Introduction to Stemming Introduction to Lemmatization Applications of Stemming & Lemmatization Difference between stemming & Lemmatization Follow us to never miss an update in the future. Instagram: https://www.instagram.com/edureka_learning/ Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka

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Natural Language Processing (NLP) is often taught at the academic level from the perspective of computational linguists. However, as data scientists, we have a richer view of the world of natural language - unstructured data that by its very nature has important latent information for humans. NLP practitioners have benefitted from machine learning techniques to unlock meaning from large corpora, and in this class we’ll explore how to do that particularly with Python, the Natural Language Toolkit (NLTK), and to a lesser extent, the Gensim Library. NLTK is an excellent library for machine learning-based NLP, written in Python by experts from both academia and industry. Python allows you to create rich data applications rapidly, iterating on hypotheses. Gensim provides vector-based topic modeling, which is currently absent in both NLTK and Scikit-Learn. The combination of Python + NLTK means that you can easily add language-aware data products to your larger analytical workflows and applications.

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1. Natural Language Processing with Python Certification Course www.edureka.co

2. Natural Language Processing with Python Certification Course www.edureka.co Text Mining & NLP

3. Natural Language Processing with Python Certification Course www.edureka.co Today’s Training Topics ❖ Evolution of Human Language ❖ What is Text Mining? ❖ Text Mining and Natural Language Processing? ❖ Applications of NLP ❖ NLP Components and Demo

4. Natural Language Processing with Python Certification Course www.edureka.co The Human Language LANGUAGE ALPHABETS 字母 वर्णमाला ALFABETOS ‫األبجدية‬ எழுத்துக்கள்

5. Natural Language Processing with Python Certification Course www.edureka.co The Human Language LANGUAGE ALPHABETS 字母 वर्णमाला ALFABETOS ‫األبجدية‬ எழுத்துக்கள் Words form Sentences

6. Natural Language Processing with Python Certification Course www.edureka.co The Human Language LANGUAGE ALPHABETS 字母 वर्णमाला ALFABETOS ‫األبجدية‬ எழுத்துக்கள் Words form Sentences

7. Natural Language Processing with Python Certification Course www.edureka.co The 21st Century 21 % STRUCTURED DATA

8. Natural Language Processing with Python Certification Course www.edureka.co The 21st Century STRUCTURED DATA21 % Unstructured

9. Natural Language Processing with Python Certification Course www.edureka.co What is Text Mining ? Text Mining / Text Analytics is the process of deriving meaningful information from natural language text

10. Natural Language Processing with Python Certification Course www.edureka.co Text Mining and NLP As, Text Mining refers to the process of deriving high quality information from the text . The overall goal is, essentially to turn text into data for analysis, via application of Natural Language Processing (NLP)

11. Natural Language Processing with Python Certification Course www.edureka.co What is NLP? NLP: Natural Language Processing is a part of computer science and artificial intelligence which deals with human languages.

12. Natural Language Processing with Python Certification Course www.edureka.co Basic Structure of a NLP Application

13. Natural Language Processing with Python Certification Course www.edureka.co Applications of NLP Sentimental Analysis Speech Recognition Chatbot Machine Translation

14. Natural Language Processing with Python Certification Course www.edureka.co Applications of NLP and Text Mining Spell Checking Keyword Search Information Extraction Advertisement Matching

15. Natural Language Processing with Python Certification Course www.edureka.co

16. Natural Language Processing with Python Certification Course www.edureka.co NLP : Components

17. Natural Language Processing with Python Certification Course www.edureka.co NLP : Components Natural Language Understanding Natural Language Generation

18. Natural Language Processing with Python Certification Course www.edureka.co NLP : Components Natural Language Understanding Natural Language Generation • Mapping input to useful representations • Analyzing different aspects of the language • Text Planning • Sentence Planning • Text Realization

19. Natural Language Processing with Python Certification Course www.edureka.co NLP : Ambiguity Natural Language Understanding Lexical Ambiguity Syntactic Ambiguity Referential Ambiguity

20. Natural Language Processing with Python Certification Course www.edureka.co NLU : Ambiguity Lexical Ambiguity Syntactic Ambiguity Referential Ambiguity She is looking for a match. The fisherman went to the bank.

21. Natural Language Processing with Python Certification Course www.edureka.co NLU : Ambiguity Lexical Ambiguity Syntactic Ambiguity Referential Ambiguity She is looking for a match. The fisherman went to the bank. The chicken is ready to eat. Visiting relatives can be boring. I saw the man with the binoculars.

22. Natural Language Processing with Python Certification Course www.edureka.co NLU : Ambiguity Lexical Ambiguity Syntactic Ambiguity Referential Ambiguity She is looking for a match. The fisherman went to the bank. The chicken is ready to eat. Visiting relatives can be boring. I saw the man with the binoculars. The boy told his father the theft. He was very upset

23. Natural Language Processing with Python Certification Course www.edureka.co NLTK

24. Natural Language Processing with Python Certification Course www.edureka.co NLTK NLTK

25. Natural Language Processing with Python Certification Course www.edureka.co NLTK NLTK

26. Natural Language Processing with Python Certification Course www.edureka.co Tokenization 01 Break a complex sentence into words 02 Understand the importance of each of the words with respect to the sentence 03 Produce a structural description on an input sentence Tokenization is the first step in NLP

27. Natural Language Processing with Python Certification Course www.edureka.co Tokenization 01 Break a complex sentence into words 02 Understand the importance of each of the words with respect to the sentence 03 Produce a structural description on an input sentence Tokenization is the first step in NLP

28. Natural Language Processing with Python Certification Course www.edureka.co Tokenization

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30. Natural Language Processing with Python Certification Course www.edureka.co Stemming Affect Normalize words into its base form or root form

31. Natural Language Processing with Python Certification Course www.edureka.co • Groups together different inflected forms of a word, called Lemma • Somehow similar to Stemming, as it maps several words into one common root • Output of Lemmatisation is a proper word • For example, a Lemmatiser should map gone, going and went into go Lemmatization

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38. Natural Language Processing with Python Certification Course www.edureka.co Syntax

39. Natural Language Processing with Python Certification Course www.edureka.co Phase Structure Rules

40. Natural Language Processing with Python Certification Course www.edureka.co Syntax Tree Syntax Tree is a tree representation of syntactic structure of sentences or strings

41. Natural Language Processing with Python Certification Course www.edureka.co Chunking Picking up Individual pieces of Information and Grouping them into bigger Pieces CHUNK

42. Natural Language Processing with Python Certification Course www.edureka.co Chunking CHUNKs PRP VBD DT JJ NN NP NP We Caught the Black Panther

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