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Natural Language Processing with TensorFlow

Natural Language Processing with TensorFlow

By : Saad, Ganegedara
4.5 (10)
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Natural Language Processing with TensorFlow

Natural Language Processing with TensorFlow

4.5 (10)
By: Saad, Ganegedara

Overview of this book

Natural language processing (NLP) supplies the majority of data available to deep learning applications, while TensorFlow is the most important deep learning framework currently available. Natural Language Processing with TensorFlow brings TensorFlow and NLP together to give you invaluable tools to work with the immense volume of unstructured data in today’s data streams, and apply these tools to specific NLP tasks. Thushan Ganegedara starts by giving you a grounding in NLP and TensorFlow basics. You'll then learn how to use Word2vec, including advanced extensions, to create word embeddings that turn sequences of words into vectors accessible to deep learning algorithms. Chapters on classical deep learning algorithms, like convolutional neural networks (CNN) and recurrent neural networks (RNN), demonstrate important NLP tasks as sentence classification and language generation. You will learn how to apply high-performance RNN models, like long short-term memory (LSTM) cells, to NLP tasks. You will also explore neural machine translation and implement a neural machine translator. After reading this book, you will gain an understanding of NLP and you'll have the skills to apply TensorFlow in deep learning NLP applications, and how to perform specific NLP tasks.
Table of Contents (14 chapters)
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13
Index

GloVe – Global Vectors representation

One of the main limitations of skip-gram and CBOW algorithms is that they can only capture local contextual information, as they only look at a fixed-length window around a word. There’s an important part of the puzzle missing here as these algorithms do not look at global statistics (by global statistics we mean a way for us to see all the occurrences of words in the context of another word in a text corpus).

However, we have already studied a structure that could contain this information in Chapter 3, Word2vec – Learning Word Embeddings: the co-occurrence matrix. Let’s refresh our memory on the co-occurrence matrix, as GloVe uses the statistics captured in the co-occurrence matrix to compute vectors.

Co-occurrence matrices encode the context information of words, but they require maintaining a V × V matrix, where V is the size of the vocabulary. To understand the co-occurrence matrix, let’s take...

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