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Hands-On Python Natural Language Processing

You're reading from   Hands-On Python Natural Language Processing Explore tools and techniques to analyze and process text with a view to building real-world NLP applications

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Product type Paperback
Published in Jun 2020
Publisher Packt
ISBN-13 9781838989590
Length 316 pages
Edition 1st Edition
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Authors (2):
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Mayank Rasu Mayank Rasu
Author Profile Icon Mayank Rasu
Mayank Rasu
Aman Kedia Aman Kedia
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Aman Kedia
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Table of Contents (16) Chapters Close

Preface 1. Section 1: Introduction
2. Understanding the Basics of NLP FREE CHAPTER 3. NLP Using Python 4. Section 2: Natural Language Representation and Mathematics
5. Building Your NLP Vocabulary 6. Transforming Text into Data Structures 7. Word Embeddings and Distance Measurements for Text 8. Exploring Sentence-, Document-, and Character-Level Embeddings 9. Section 3: NLP and Learning
10. Identifying Patterns in Text Using Machine Learning 11. From Human Neurons to Artificial Neurons for Understanding Text 12. Applying Convolutions to Text 13. Capturing Temporal Relationships in Text 14. State of the Art in NLP 15. Other Books You May Enjoy

Understanding word embeddings

Word embedding is a learned representation of a word wherein each word is represented using a vector in n-dimensional space. Words with similar meanings should have similar representations. These representations can also help in identifying synonyms, antonyms, and various other relationships between words. We mentioned that embeddings can be built to correspond to individual words; however, this idea can be extended to develop embeddings for individual sentences, documents, characters, and so on. Word2vec captures relationships in text; consequently, similar words have similar representations. Let's try to understand what type of semantic information Word2vec can actually encapsulate.

We will look at a few examples to understand what relationships and analogies can be captured by a Word2vec model. A very frequently used example deals with the embedding of King, Man, Queen, and Woman. Once a Word2vec model is built properly and the embedding from it is...

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