This document discusses the use of statistics and probabilities in corpus linguistics. It explains that statistics can provide useful tools for linguists to better understand languages. Probabilities in particular can be used to estimate word frequencies and develop probabilistic models of spelling. The document also discusses best practices for annotating corpora, including annotating with sufficient data to achieve statistical significance and avoiding errors like testing machine learning models on the same data they were trained on.
Subject: English 18
Translation and Editing Text
Topic: Techniques in Translation
Techniques in Translation
1. Computer assisted
2. Machine translation
3. Subtitling
4. editing/Post editing
1. COMPUTER-ASSISTED
Computer-assisted translations also called 'computer-aided translation or machine-aided human translation. It is a form of translation wherein human translator creates a target text with the assistance of a computer program. The machine supports a human translator.
What is Computer Aided Translation?
Computer aided translation (also called computer assisted translation) is a system in which a human translator uses a computer in the translation process.
Humans and computers each have their strengths and weaknesses. The idea of computer aided translation (CAT) software is to make the most of the strengths of people and computers.
Translation performed solely by computers ("machine translation") has very poor quality. Meanwhile, no human can translate as fast as a computer can. By using a CAT tool, however, you can gain some of the speed, consistency, and memory benefits of the computer, without sacrificing the high quality of human translation.
Translation Skills: Theory and practice
The theoretical base should include general information regarding the translator's workshop and the issues one should be familiar with.
*Internet
It is worth discussing is the role of the internet as a source of information. It is important to use the translations which have been on the market for some time and are recognized by other people. This is where the internet becomes very useful for it allows us to search forgiven information (google.com, yahoo.com, altavista.com, etc.), use online dictionaries and corpora, or compare different language versions of the same site (Wikipedia the Free Encyclopedia and the ability to switch from different languages defining a given notion-www.wikipedia.org). Google itself is a powerful tool since it allows us not only to search for information on webpages but also it indexes*.doc and *pdf files stored on servers, allowing us to browse through their contents in search for a context.
*Software
A successful translator needs to know how to handle various computer applications in his/her work. That's why basic software used to compress and decompress files should be mentioned (WinZip, WinRAR). PDF and multimedia files readers (images, audio). Last, the use of different word processors, are usually the first application that leads people using a computer for their work. This comprises of spell checking, standard layouts, ability to have some characters appear in bold print, italics, or underlined. We can save documents, so it can be used again, and we can print the documents.
It is important to mention CAT tool, how the
The Personal Interview remains a crucial step in the selection process for a job. In the world where we have thousands of jobs as options, we need to be ready for multiple interviews for the RIGHT Job. Hence, a thorough awareness and clarity are needed about HR Interview Questions.
Welcome to watch Creative Biolabs’ slide about immune system and immune therapy. here we share some basic knowledge about T Cell Receptor Engineered T Cell Technology or TCR-T and its application on tumor therapy.
Subject: English 18
Translation and Editing Text
Topic: Techniques in Translation
Techniques in Translation
1. Computer assisted
2. Machine translation
3. Subtitling
4. editing/Post editing
1. COMPUTER-ASSISTED
Computer-assisted translations also called 'computer-aided translation or machine-aided human translation. It is a form of translation wherein human translator creates a target text with the assistance of a computer program. The machine supports a human translator.
What is Computer Aided Translation?
Computer aided translation (also called computer assisted translation) is a system in which a human translator uses a computer in the translation process.
Humans and computers each have their strengths and weaknesses. The idea of computer aided translation (CAT) software is to make the most of the strengths of people and computers.
Translation performed solely by computers ("machine translation") has very poor quality. Meanwhile, no human can translate as fast as a computer can. By using a CAT tool, however, you can gain some of the speed, consistency, and memory benefits of the computer, without sacrificing the high quality of human translation.
Translation Skills: Theory and practice
The theoretical base should include general information regarding the translator's workshop and the issues one should be familiar with.
*Internet
It is worth discussing is the role of the internet as a source of information. It is important to use the translations which have been on the market for some time and are recognized by other people. This is where the internet becomes very useful for it allows us to search forgiven information (google.com, yahoo.com, altavista.com, etc.), use online dictionaries and corpora, or compare different language versions of the same site (Wikipedia the Free Encyclopedia and the ability to switch from different languages defining a given notion-www.wikipedia.org). Google itself is a powerful tool since it allows us not only to search for information on webpages but also it indexes*.doc and *pdf files stored on servers, allowing us to browse through their contents in search for a context.
*Software
A successful translator needs to know how to handle various computer applications in his/her work. That's why basic software used to compress and decompress files should be mentioned (WinZip, WinRAR). PDF and multimedia files readers (images, audio). Last, the use of different word processors, are usually the first application that leads people using a computer for their work. This comprises of spell checking, standard layouts, ability to have some characters appear in bold print, italics, or underlined. We can save documents, so it can be used again, and we can print the documents.
It is important to mention CAT tool, how the
The Personal Interview remains a crucial step in the selection process for a job. In the world where we have thousands of jobs as options, we need to be ready for multiple interviews for the RIGHT Job. Hence, a thorough awareness and clarity are needed about HR Interview Questions.
Welcome to watch Creative Biolabs’ slide about immune system and immune therapy. here we share some basic knowledge about T Cell Receptor Engineered T Cell Technology or TCR-T and its application on tumor therapy.
Oct. 2013 Via Christi Women's Connection presentation on breast cancer genetic testing featuring Patty Tenofsky, MD, with Via Christi Clinic in Wichita, Kan.
Slides and audio for this presentation are available on YouTube: http://youtu.be/NJ0HTrH-uog
Nancy Lin, MD, of the Susan F. Smith Center for Women's Cancers at Dana-Farber Cancer Institute, talks about the differences between various types of breast cancer, and the new therapies that are being developed to treat the disease. This presentation was originally given at the Metastatic Breast Cancer Forum held at Dana-Farber on Oct. 5, 2013. The program was sponsored by EMBRACE (Ending Metastatic Breast Cancer for Everyone).
Oct. 2013 Via Christi Women's Connection presentation on breast cancer genetic testing featuring Patty Tenofsky, MD, with Via Christi Clinic in Wichita, Kan.
Slides and audio for this presentation are available on YouTube: http://youtu.be/NJ0HTrH-uog
Nancy Lin, MD, of the Susan F. Smith Center for Women's Cancers at Dana-Farber Cancer Institute, talks about the differences between various types of breast cancer, and the new therapies that are being developed to treat the disease. This presentation was originally given at the Metastatic Breast Cancer Forum held at Dana-Farber on Oct. 5, 2013. The program was sponsored by EMBRACE (Ending Metastatic Breast Cancer for Everyone).
Making Machine Learning Work in Practice - StampedeCon 2014StampedeCon
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LEPOR: an augmented machine translation evaluation metric - Thesis PPT Lifeng (Aaron) Han
Machine translation (MT) was developed as one of the hottest research topics in the natural language processing (NLP) literature. One important issue in MT is that how to evaluate the MT system reasonably and tell us whether the translation system makes an improvement or not. The traditional manual judgment methods are expensive, time-consuming, unrepeatable, and sometimes with low agreement. On the other hand, the popular automatic MT evaluation methods have some weaknesses. Firstly, they tend to perform well on the language pairs with English as the target language, but weak when English is used as source. Secondly, some methods rely on many additional linguistic features to achieve good performance, which makes the metric unable to replicateand apply to other language pairs easily. Thirdly, some popular metrics utilize incomprehensive factors, which result in low performance on some practical tasks.
In this thesis, to address the existing problems, we design novel MT evaluation methods and investigate their performances on different languages. Firstly, we design augmented factors to yield highly accurate evaluation.Secondly, we design a tunable evaluation model where weighting of factors can be optimized according to the characteristics of languages. Thirdly, in the enhanced version of our methods, we design concise linguistic feature using POS to show that our methods can yield even higher performance when using some external linguistic resources. Finally, we introduce the practical performance of our metrics in the ACL-WMT workshop shared tasks, which show that the proposed methods are robust across different languages.
The World Wide Web is moving from a Web of hyper-linked documents to a Web of linked data. Thanks to the Semantic Web technological stack and to the more recent Linked Open Data (LOD) initiative, a vast amount of RDF data have been published in freely accessible datasets connected with each other to form the so called LOD cloud. As of today, we have tons of RDF data available in the Web of Data, but only a few applications really exploit their potential power. The availability of such data is for sure an opportunity to feed personalized information access tools such as recommender systems. We will show how to plug Linked Open Data in a recommendation engine in order to build a new generation of LOD-enabled applications.
(Lecture given @ the 11th Reasoning Web Summer School - Berlin - August 1, 2015)
On how to change the utility curve of deep learning to make deep learning projects deliver an ROI no matter how accurate the machine learning system is - presented at the Nasscom Analytics Summit 2018.
I assume that you, like me, don't enjoy having to stare at equations on a blackboard, and would rather be working through exercises that help you understand a subject.
These exercises use toy problems to walk you through the basics of deep learning. Hopefully, you will find it satisfying to learn the subject by doing experiments and observing how various algorithms fare on the toy problems.
The code that goes with these slides is available from https://github.com/aiaioo/DeepLearningBasicsTutorial/
A lecture on text analytics - 3 types of opportunities, 3 use cases, 3 dos and 3 don'ts.
Get the hang of how to go about solving a text-related business problem using text analytics.
Computer science concepts explained using code snippets written in Kannada, a South Indian language.
The examples in the slides can be used as a guide to writing Arduino programs in Indian languages.
More information is available at http://www.aiaioo.com/arduino_in_local_languages
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The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
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- How to build efficient development pipeline roles and component templates
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2. Text Analysis and Statistical Methods
• Motivation
• Statistics and Probabilities
• Application to Corpus Linguistics
3. Motivation
• Human Development is all about Tools
– Describe the world
– Explain the world
– Solve problems in the world
• Some of these tools
– Language
– Algorithms
– Statistics and Probabilities
4. Motivation – Algorithms for Education Policy
• 300 to 400 million people are illiterate
• If we took 1000 teachers, 100 students per
class, and 3 years of teaching per student
–12000 years
• If we had 100,000 teachers
–120 years
5. Motivation – Algorithms for Education Policy
• 300 to 400 million people are illiterate
• If we took 1 teacher, 10 students per class,
and 3 years of teaching per student.
• Then each student teaches 10 more students.
– about 30 years
• We could turn the whole world literate in
– about 34 years
6. Motivation – Algorithms for Education Policy
Difference:
Policy 1 is O(n) time
Policy 2 is O(log n) time
7. Motivation – Statistics for Linguists
We have shown that:
Using a tool from computer science, we can
solve a problem in quite another area.
SIMILARLY
Linguists will find statistics to be a handy tool
to better understand languages.
9. Introduction to Aiaioo Labs
• Focus on Text Analysis, NLP, ML, AI
• Applications to business problems
• Team consists of
– Researchers
• Cohan
• Madhulika
• Sumukh
– Linguists
– Engineers
– Marketing
10. Applications to Corpus Linguistics
• What to annotate
• How to develop insights
• How to annotate
• How much data to annotate
• How to avoid mistakes in using the corpus
11. Approach to corpus construction
• The problem: ‘word semantics’
• What is better?
– Wordnet
– Google terabyte corpus (with annotations?)
12. Approach to corpus construction
• The problem: ‘word semantics’
• What is better?
– Wordnet (set of rules about the real world)
– Google terabyte corpus (real world)
13. Approach to corpus construction
• The problem: ‘word semantics’
• What is better?
– Wordnet (not countable)
– Google terabyte corpus (countable)
For training machine learning algorithms, the latter might be more valuable,
just because it is possible to tally up evidence on the latter corpus.
Of course I am simplifying things a lot and I don’t mean that the former is not
valuable at all.
14. Approach to corpus construction
So if you are constructing a corpus on
which machine learning methods might
be applied, construct your corpus so that
you retain as many examples of surface
forms as possible.
15. Applications to Corpus Linguistics
• What to annotate
• How to develop insights
• How to annotate
• How much data to annotate
• How to avoid mistakes in using the corpus
16. Problem : Spelling
1. Field
2. Wield
3. Shield
4. Deceive
5. Receive
6. Ceiling
Courtesy of http://norvig.com/chomsky.html
17. Rule-based Approach
“I before E except after C”
-- an example of a linguistic insight
Courtesy of http://norvig.com/chomsky.html
18. Probabilistic Statistical Model:
• Count the occurrences of ‘ie’ and ‘ei’ and ‘cie’
and ‘cei’ in a large corpus
P(IE) = 0.0177
P(EI) = 0.0046
P(CIE) = 0.0014
P(CEI) = 0.0005
Courtesy of http://norvig.com/chomsky.html
19. Words where ie occur after c
• science
• society
• ancient
• species
Courtesy of http://norvig.com/chomsky.html
20. But you can go back to a Rule-based
Approach
“I before E except after C only if C is not
preceded by an S”
-- an example of a linguistic insight
Courtesy of http://norvig.com/chomsky.html
21. What is a probability?
• A number between 0 and 1
• The sum of the probabilities on all outcomes is 1
Heads Tails
• P(heads) = 0.5
• P(tails) = 0.5
24. Applications to Corpus Linguistics
• What to annotate
• How to develop insights
• How to annotate
• How much data to annotate
• How to avoid mistakes in using the corpus
25. How do you annotate?
• The problem: ‘named entity classification’
• What is better?
– Per, Org, Loc, Prod, Time
– Right, Wrong
26. How do you annotate?
• The problem: ‘named entity classification’
• What is better?
– Per, Org, Loc, Prod, Time
– Right, Wrong
It depends on whether you care about
precision or recall or both.
27. What are Precision and Recall
Classification metrics used to compare ML
algorithms.
28. Classification Metrics
Politics Sports
The UN Security Warwickshire's Clarke
Council adopts its first equalled the first-class
clear condemnation of record of seven
How do you compare two ML algorithms?
32. Metrics for Measuring Classification Quality
Point of View – Class 1
Gold Class 1 Gold Class 2
Observed Class 1 TP FP
Observed Class 2 FN TN
Great metrics for highly unbalanced corpora!
33. Metrics for Measuring Classification Quality
F-Score = the harmonic mean of Precision and Recall
35. Precision, Recall, Average, F-Score
Precision Recall Average F-Score
Classifier 1 50% 50% 50% 50%
Classifier 2 30% 70% 50% 42%
Classifier 3 10% 90% 50% 18%
What is the sort of classifier that fares worst?
36. How do you annotate?
So if you are constructing a corpus for a
machine learning tool where only
precision matters, all you need is a corpus
of presumed positives that you mark as
right or wrong (or the label and other).
If you need to get good recall as well, you
will need a corpus annotated with all the
relevant labels.
37. Applications to Corpus Linguistics
• What to annotate
• How to develop insights
• How to annotate
• How much data to annotate
• How to avoid mistakes in using the corpus
38. How much data should you annotate?
• The problem: ‘named entity classification’
• What is better?
– 2000 words per category (each of Per, Org,
Loc, Prod, Time)
– 5000 words per category (each of Per, Org,
Loc, Prod, Time)
39. Small Corpus – 4 Fold Cross-Validation
Split Train Folds Test Fold
First Run • 1, 2, 3 • 4
Second Run • 2, 3, 4 • 1
Third Run • 3, 4, 1 • 2
Fourth Run • 4, 1, 2 • 3
40. Statistical significance in a paper
significance estimate
variance
Remember to take Inter-Annotator Agreement into account
41. How much do you annotate?
So you increase the corpus size till that
the error margins drop to a value that the
experimenter considers sufficient.
The smaller the error margins, the finer
the comparisons the experimenter can
make between algorithms.
42. Applications to Corpus Linguistics
• What to annotate
• How to develop insights
• How to annotate
• How much data to annotate
• How to avoid mistakes in using the
corpus
43. Avoid Mistakes
• The problem: ‘train a classifier’
• What is better?
– Train with all the data that you have, and
then test on all the data that you have?
– Train on half and test on the other half?
44. Avoid Mistakes
• Training a corpus on a full corpus and
then running tests using the same corpus
is a bad idea because it is a bit like
revealing the questions in the exam
before the exam.
• A simple algorithm that can game such a
test is a plain memorization algorithm
that memorizes all the possible inputs
and the corresponding outputs.
45. Corpus Splits
Split Percentage
Training • 60%
Validation • 20%
Testing • 20%
Total • 100%
46. How do you avoid mistakes?
Do not train a machine learning algorithm on the
‘testing’ section of the corpus.
During the development/tuning of the algorithm,
do not make any measurements using the
‘testing’ section, or you’re likely to ‘cheat’ on the
feature set, and settings. Use the ‘validation’
section for that.
I have seen researchers claim 99.7% accuracy on
Indian language POS tagging because they failed
to keep the different sections of their corpus
sufficiently well separated.