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Natural Language Processing and Computational Linguistics

You're reading from   Natural Language Processing and Computational Linguistics A practical guide to text analysis with Python, Gensim, spaCy, and Keras

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Product type Paperback
Published in Jun 2018
Publisher Packt
ISBN-13 9781788838535
Length 306 pages
Edition 1st Edition
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Author (1):
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Bhargav Srinivasa-Desikan Bhargav Srinivasa-Desikan
Author Profile Icon Bhargav Srinivasa-Desikan
Bhargav Srinivasa-Desikan
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Table of Contents (17) Chapters Close

Preface 1. What is Text Analysis? 2. Python Tips for Text Analysis FREE CHAPTER 3. spaCy's Language Models 4. Gensim – Vectorizing Text and Transformations and n-grams 5. POS-Tagging and Its Applications 6. NER-Tagging and Its Applications 7. Dependency Parsing 8. Topic Models 9. Advanced Topic Modeling 10. Clustering and Classifying Text 11. Similarity Queries and Summarization 12. Word2Vec, Doc2Vec, and Gensim 13. Deep Learning for Text 14. Keras and spaCy for Deep Learning 15. Sentiment Analysis and ChatBots 16. Other Books You May Enjoy

Visualizing topic models

Like we have said before, the purpose of topic models is to better understand our textual data - and visualizations are one of the best ways to understand and look at our data. There are multiple ways and techniques to visualize topic models - we will be focusing on the methods implemented and compatible with Gensim, but like we have done throughout the book, we will be providing links and documentation to the other popular topic modeling visualization tools.

One of the most popular topic modeling visualization libraries is LDAvis - an R library build largely on D3, it has been ported to Python as pyLDAvis and is just as nifty in Python and is very well integrated with Gensim as well. It is based on the original paper (LDAvis: A method for visualizing and interpreting topics [19]) by Carson Sievert and Kenneth E. Shirley.

The pyLDAvis library is agnostic...

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