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)
21
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22
Index

An introduction to RL

What is common between a baby learning to walk, birds learning to fly, and an RL agent learning to play an Atari game? Well, all three involve:

  • Trial and error: The child (or the bird) tries various ways, fails many times, and succeeds in some ways before it can really walk (or fly). The RL agent plays many games, winning some and losing many, before it can become reliably successful.
  • Goal: The child has the goal to walk, the bird to fly, and the RL agent to win the game.
  • Interaction with the environment: The only feedback they have is from their environment.

So, the first questions that arise are what is RL, and how is it different from supervised and unsupervised learning? Anyone who owns a pet knows that the best strategy to train a pet is rewarding it for desirable behavior and disciplining it for bad behavior. RL, also called learning with a critic, is a learning paradigm where the agent learns in the same manner. The agent...