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

Multi-layer perceptron: our first example of a network

In this chapter, we present our first example of a network with multiple dense layers. Historically, “perceptron” was the name given to the model having one single linear layer, and as a consequence, if it has multiple layers, we call it a Multi-Layer Perceptron (MLP). Note that the input and the output layers are visible from the outside, while all the other layers in the middle are hidden – hence the name hidden layers. In this context, a single layer is simply a linear function and the MLP is therefore obtained by stacking multiple single layers one after the other:

Diagram  Description automatically generated

Figure 1.3: An example of multiple layer perceptron

In Figure 1.3 each node in the first hidden layer receives an input and “fires” (0,1) according to the values of the associated linear function. Then the output of the first hidden layer is passed to the second layer where another linear function is applied, the results...