Book Image

Deep Learning with TensorFlow and Keras – 3rd edition - Third Edition

By : Amita Kapoor, Antonio Gulli, Sujit Pal
5 (2)
Book Image

Deep Learning with TensorFlow and Keras – 3rd edition - Third Edition

5 (2)
By: Amita Kapoor, Antonio Gulli, Sujit Pal

Overview of this book

Deep Learning with TensorFlow and Keras teaches you neural networks and deep learning techniques using TensorFlow (TF) and Keras. You'll learn how to write deep learning applications in the most powerful, popular, and scalable machine learning stack available. TensorFlow 2.x focuses on simplicity and ease of use, with updates like eager execution, intuitive higher-level APIs based on Keras, and flexible model building on any platform. This book uses the latest TF 2.0 features and libraries to present an overview of supervised and unsupervised machine learning models and provides a comprehensive analysis of deep learning and reinforcement learning models using practical examples for the cloud, mobile, and large production environments. This book also shows you how to create neural networks with TensorFlow, runs through popular algorithms (regression, convolutional neural networks (CNNs), transformers, generative adversarial networks (GANs), recurrent neural networks (RNNs), natural language processing (NLP), and graph neural networks (GNNs)), covers working example apps, and then dives into TF in production, TF mobile, and TensorFlow with AutoML.
Table of Contents (23 chapters)
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Index

Static embeddings

Static embeddings are the oldest type of word embedding. The embeddings are generated against a large corpus but the number of words, though large, is finite. You can think of a static embedding as a dictionary, with words as the keys and their corresponding vector as the value. If you have a word whose embedding needs to be looked up that was not in the original corpus, then you are out of luck. In addition, a word has the same embedding regardless of how it is used, so static embeddings cannot address the problem of polysemy, that is, words with multiple meanings. We will explore this issue further when we cover non-static embeddings later in this chapter.

Word2Vec

The models known as Word2Vec were first created in 2013 by a team of researchers at Google led by Tomas Mikolov [1, 2, 3]. The models are self-supervised, that is, they are supervised models that depend on the structure of natural language to provide labeled training data.

The two architectures...