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Neural Network Programming with TensorFlow

You're reading from  Neural Network Programming with TensorFlow

Product type Book
Published in Nov 2017
Publisher Packt
ISBN-13 9781788390392
Pages 274 pages
Edition 1st Edition
Languages
Authors (2):
Manpreet Singh Ghotra Manpreet Singh Ghotra
Profile icon Manpreet Singh Ghotra
Rajdeep Dua Rajdeep Dua
Profile icon Rajdeep Dua
View More author details
Toc

Table of Contents (17) Chapters close

Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Maths for Neural Networks 2. Deep Feedforward Networks 3. Optimization for Neural Networks 4. Convolutional Neural Networks 5. Recurrent Neural Networks 6. Generative Models 7. Deep Belief Networking 8. Autoencoders 9. Research in Neural Networks 10. Getting started with TensorFlow

Bidirectional RNNs


In this section, we will look at a new neural network topology that is gaining momentum in the area of NLP.

Schuster and Paliwal have introduced Bidirectional Recurrent Neural Networks (BRNN) in 1997. BRNNs help increase the amount of input information available to the network. Multilayer perceptrons (MLPs) and time delay neural networks (TDNNs) are known to have limitations on the input data flexibility. RNNs also require their input data to be fixed. More advanced topologies like RNNs also have restrictions as the future input information cannot be predicted from the current state. BRNNs, on the contrary, do not need their input data to be fixed. Their future input information is reachable from the current state. The idea of BRNNs is to connect two hidden layers of opposite directions to the same output. With this structure, the output layer is able to get information from past and future states.

BRNNs are useful when the context of the input is needed. As an example,...

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