Book Image

TensorFlow 1.x Deep Learning Cookbook

Book Image

TensorFlow 1.x Deep Learning Cookbook

Overview of this book

Deep neural networks (DNNs) have achieved a lot of success in the field of computer vision, speech recognition, and natural language processing. This exciting recipe-based guide will take you from the realm of DNN theory to implementing them practically to solve real-life problems in the artificial intelligence domain. In this book, you will learn how to efficiently use TensorFlow, Google’s open source framework for deep learning. You will implement different deep learning networks, such as Convolutional Neural Networks (CNNs), Recurrent Neural Networks (RNNs), Deep Q-learning Networks (DQNs), and Generative Adversarial Networks (GANs), with easy-to-follow standalone recipes. You will learn how to use TensorFlow with Keras as the backend. You will learn how different DNNs perform on some popularly used datasets, such as MNIST, CIFAR-10, and Youtube8m. You will not only learn about the different mobile and embedded platforms supported by TensorFlow, but also how to set up cloud platforms for deep learning applications. You will also get a sneak peek at TPU architecture and how it will affect the future of DNNs. By using crisp, no-nonsense recipes, you will become an expert in implementing deep learning techniques in growing real-world applications and research areas such as reinforcement learning, GANs, and autoencoders.
Table of Contents (15 chapters)
14
TensorFlow Processing Units

Neural machine translation - inference on a seq2seq RNN

In this recipe, we use the results of the previous recipe to translate from a source language into a target language. The idea is very simple: a source sentence is given the two combined RNNs (encoder + decoder) as input . As soon as the sentence concludes, the decoder will emit logit values and we greedily emit the word associated with the maximum value. As an example, the word moi is emitted as the first token from the decoder because this word has the maximum logit value. After that, the word suis is emitted, and so on:

An example of sequence models for NMT with probabilities as seen in https://github.com/lmthang/thesis/blob/master/thesis.pdf

There are multiple strategies for using the output of a decoder:

  • Greedy: The word corresponding to the maximum logit is emitted
  • Sampling: A word is emitted by sampling the logit...