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

Language model-based embeddings

Language model-based embeddings represent the next step in the evolution of word embeddings. A language model is a probability distribution over sequences of words. Once we have a model, we can ask it to predict the most likely next word given a particular sequence of words. Similar to traditional word embeddings, both static and dynamic, they are trained to predict the next word (or previous word as well, if the language model is bidirectional) given a partial sentence from the corpus. Training does not involve active labeling, since it leverages the natural grammatical structure of large volumes of text, so in a sense, this is a self-supervised learning process.

The main difference between a language model as a word embedding and more traditional embeddings is that traditional embeddings are applied as a single initial transformation on the data and are then fine-tuned for specific tasks. In contrast, language models are trained on large external...