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Hands-On Natural Language Processing with PyTorch 1.x

You're reading from   Hands-On Natural Language Processing with PyTorch 1.x Build smart, AI-driven linguistic applications using deep learning and NLP techniques

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Product type Paperback
Published in Jul 2020
Publisher Packt
ISBN-13 9781789802740
Length 276 pages
Edition 1st Edition
Languages
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Author (1):
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Thomas Dop Thomas Dop
Author Profile Icon Thomas Dop
Thomas Dop
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Table of Contents (14) Chapters Close

Preface 1. Section 1: Essentials of PyTorch 1.x for NLP
2. Chapter 1: Fundamentals of Machine Learning and Deep Learning FREE CHAPTER 3. Chapter 2: Getting Started with PyTorch 1.x for NLP 4. Section 2: Fundamentals of Natural Language Processing
5. Chapter 3: NLP and Text Embeddings 6. Chapter 4: Text Preprocessing, Stemming, and Lemmatization 7. Section 3: Real-World NLP Applications Using PyTorch 1.x
8. Chapter 5: Recurrent Neural Networks and Sentiment Analysis 9. Chapter 6: Convolutional Neural Networks for Text Classification 10. Chapter 7: Text Translation Using Sequence-to-Sequence Neural Networks 11. Chapter 8: Building a Chatbot Using Attention-Based Neural Networks 12. Chapter 9: The Road Ahead 13. Other Books You May Enjoy

Exploring CBOW

The continuous bag-of-words (CBOW) model forms part of Word2Vec – a model created by Google in order to obtain vector representations of words. By running these models over a very large corpus, we are able to obtain detailed representations of words that represent their semantic and contextual similarity to one another. The Word2Vec model consists of two main components:

  • CBOW: This model attempts to predict the target word in a document, given the surrounding words.
  • Skip-gram: This is the opposite of CBOW; this model attempts to predict the surrounding words, given the target word.

Since these models perform similar tasks, we will focus on just one for now, specifically CBOW. This model aims to predict a word (the target word), given the other words around it (known as the context words). One way of accounting for context words could be as simple as using the word directly before the target word in the sentence to predict the target word, whereas...

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