Book Image

Deep Learning for Natural Language Processing

By : Karthiek Reddy Bokka, Shubhangi Hora, Tanuj Jain, Monicah Wambugu
Book Image

Deep Learning for Natural Language Processing

By: Karthiek Reddy Bokka, Shubhangi Hora, Tanuj Jain, Monicah Wambugu

Overview of this book

Applying deep learning approaches to various NLP tasks can take your computational algorithms to a completely new level in terms of speed and accuracy. Deep Learning for Natural Language Processing starts by highlighting the basic building blocks of the natural language processing domain. The book goes on to introduce the problems that you can solve using state-of-the-art neural network models. After this, delving into the various neural network architectures and their specific areas of application will help you to understand how to select the best model to suit your needs. As you advance through this deep learning book, you’ll study convolutional, recurrent, and recursive neural networks, in addition to covering long short-term memory networks (LSTM). Understanding these networks will help you to implement their models using Keras. In later chapters, you will be able to develop a trigger word detection application using NLP techniques such as attention model and beam search. By the end of this book, you will not only have sound knowledge of natural language processing, but also be able to select the best text preprocessing and neural network models to solve a number of NLP issues.
Table of Contents (11 chapters)

Gated Recurrent Units (GRUs)

GRUs help the network to remember long-term dependencies in an explicit manner. This is achieved by introducing more variables in the structure of a simple RNN.

So, what will help us to get rid of the vanishing gradients problem? Intuitively speaking, if we allow the network to transfer most of the knowledge from the activation function of the previous timesteps, then an error can be backpropagated more faithfully than a simple RNN case. If you are familiar with residual networks for image classification, then you will recognize this function as being similar to that of a skip connection. Allowing the gradient to backpropagate without vanishing enables the network to learn more uniformly across layers and, hence, eliminates the issue of gradient instability:

Figure 6.6: The full GRU structure

The different signs in the preceding diagram are as follows:

Figure 6.7: The meanings of the different signs in the GRU diagram

Note

The Hadamard...