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
Other Books You May Enjoy
22
Index

TensorFlow Probability distributions

Every distribution in TFP has a shape, batch, and event size associated with it. The shape is the sample size; it represents independent and identically distributed draws or observations. Consider the normal distribution that we defined in the previous section:

normal = tfd.Normal(loc=0., scale=1.)

This defines a single normal distribution, with mean zero and standard deviation one. When we use the sample function, we do a random draw from this distribution.

Notice the details regarding batch_shape and event_shape if you print the object normal:

print(normal)
>>> tfp.distributions.Normal("Normal", batch_shape=[], event_shape=[], dtype=float32)

Let us try and define a second normal object, but this time, loc and scale are lists:

normal_2 = tfd.Normal(loc=[0., 0.], scale=[1., 3.])
print(normal_2)
>>> tfp.distributions.Normal("Normal", batch_shape=[2], event_shape=[], dtype...