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 example of DCNN: LeNet

Yann LeCun, who won the Turing Award, proposed [1] a family of ConvNets named LeNet, trained for recognizing MNIST handwritten characters with robustness to simple geometric transformations and distortion. The core idea of LeNet is to have lower layers alternating convolution operations with max-pooling operations. The convolution operations are based on carefully chosen local receptive fields with shared weights for multiple feature maps. Then, higher levels are fully connected based on a traditional MLP with hidden layers and softmax as the output layer.

LeNet code in TF

To define a LeNet in code, we use a convolutional 2D module (note that tf.keras.layers.Conv2D is an alias of tf.keras.layers.Convolution2D, so the two can be used in an interchangeable way – see https://www.tensorflow.org/api_docs/python/tf/keras/layers/Conv2D):

layers.Convolution2D(20, (5, 5), activation='relu', input_shape=input_shape)

where the first...