Book Image

Mastering TensorFlow 1.x

Book Image

Mastering TensorFlow 1.x

Overview of this book

TensorFlow is the most popular numerical computation library built from the ground up for distributed, cloud, and mobile environments. TensorFlow represents the data as tensors and the computation as graphs. This book is a comprehensive guide that lets you explore the advanced features of TensorFlow 1.x. Gain insight into TensorFlow Core, Keras, TF Estimators, TFLearn, TF Slim, Pretty Tensor, and Sonnet. Leverage the power of TensorFlow and Keras to build deep learning models, using concepts such as transfer learning, generative adversarial networks, and deep reinforcement learning. Throughout the book, you will obtain hands-on experience with varied datasets, such as MNIST, CIFAR-10, PTB, text8, and COCO-Images. You will learn the advanced features of TensorFlow1.x, such as distributed TensorFlow with TF Clusters, deploy production models with TensorFlow Serving, and build and deploy TensorFlow models for mobile and embedded devices on Android and iOS platforms. You will see how to call TensorFlow and Keras API within the R statistical software, and learn the required techniques for debugging when the TensorFlow API-based code does not work as expected. The book helps you obtain in-depth knowledge of TensorFlow, making you the go-to person for solving artificial intelligence problems. By the end of this guide, you will have mastered the offerings of TensorFlow and Keras, and gained the skills you need to build smarter, faster, and efficient machine learning and deep learning systems.
Table of Contents (21 chapters)
19
Tensor Processing Units

Preprocessing the dataset for RNN models with Keras

Building an RNN network in Keras is much simpler as compared to building using lower=level TensorFlow classes and methods. For Keras, we preprocess the data, as described in the previous sections, to get the supervised machine learning time series datasets: X_train, Y_train, X_test, Y_test.

From here onwards, the preprocessing differs. For Keras, the input has to be in the shape (samples, time steps, features). As we converted our data to the supervised machine learning format, while reshaping the data, we can either set the time steps to 1, thus feeding all input time steps as features, or we can set the time steps to the actual number of time steps, thus feeding the feature set for each time step. In other words, the X_train and X_test datasets that we obtained earlier could be reshaped as one of the following methods:

Method...