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

Implementing an LSTM


Here we will discuss the details of the LSTM implementation. Though there are sublibraries in TensorFlow that have already implemented ready-to-go LSTMs, we will implement one from scratch. This will be very valuable, as in the real world there might be situations where you cannot use these off-the-shelf components directly. This code is available in the lstm_for_text_generation.ipynb exercise located in the ch8 folder of the exercises. However, we will also include an exercise where we will show how to use the existing TensorFlow RNN API that will be available in lstm_word2vec_rnn_api.ipynb, located in the same folder. Here we will discuss the code available in the lstm_for_text_generation.ipynb file.

First, we will discuss the hyperparameters and their effects that are used for the LSTM. Thereafter, we will discuss the parameters (weights and biases) required to implement the LSTM. We will then discuss how these parameters are used to write the operations taking place...