Book Image

Natural Language Processing with TensorFlow

By : Motaz Saad, Thushan Ganegedara
Book Image

Natural Language Processing with TensorFlow

By: Motaz Saad, Thushan 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 (16 chapters)
Natural Language Processing with TensorFlow
Contributors
Preface
Index

GloVe – Global Vectors representation


Methods for learning word vectors fall into either of two categories: global matrix factorization-based methods or local context window-based methods. Latent Semantic Analysis (LSA) is an example of a global matrix factorization-based method, and skip-gram and CBOW are local context window-based methods. LSA is used as a document analysis technique that maps words in the documents to something known as a concept, a common pattern of words that appears in a document. Global matrix factorization-based methods efficiently exploit the global statistics of a corpus (for example, co-occurrence of words in a global scope), but have shown to perform poorly at word analogy tasks. On the other hand, context window-based methods have been shown to perform well at word analogy tasks, but do not utilize global statistics of the corpus, leaving space for improvement. GloVe attempts to get the best of both worlds—an approach that efficiently leverages global corpus...