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Deep Learning with Theano

You're reading from   Deep Learning with Theano Perform large-scale numerical and scientific computations efficiently

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781786465825
Length 300 pages
Edition 1st Edition
Tools
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Author (1):
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Christopher Bourez Christopher Bourez
Author Profile Icon Christopher Bourez
Christopher Bourez
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Table of Contents (15) Chapters Close

Preface 1. Theano Basics 2. Classifying Handwritten Digits with a Feedforward Network FREE CHAPTER 3. Encoding Word into Vector 4. Generating Text with a Recurrent Neural Net 5. Analyzing Sentiment with a Bidirectional LSTM 6. Locating with Spatial Transformer Networks 7. Classifying Images with Residual Networks 8. Translating and Explaining with Encoding – decoding Networks 9. Selecting Relevant Inputs or Memories with the Mechanism of Attention 10. Predicting Times Sequences with Advanced RNN 11. Learning from the Environment with Reinforcement 12. Learning Features with Unsupervised Generative Networks 13. Extending Deep Learning with Theano Index

Sequence-to-sequence networks for natural language processing


Rule-based systems are being replaced by end-to-end neural networks because of their increase in performance.

An end-to-end neural network means the network directly infers all possible rules by example, without knowing the underlying rules, such as syntax and conjugation; the words (or the characters) are directly fed into the network as input. The same is true for the output format, which can be directly the word indexes themselves. The architecture of the network takes care of learning the rules with its coefficients.

The architecture of choice for such end-to-end encoding-decoding networks applied to Natural Language Processing (NLP), is the sequence-to-sequence network, displayed in the following figure:

Word indexes are converted into their continuous multi-dimensional values in the embedded space with a lookup table. This conversion, presented in Chapter 3, Encoding Word into Vector is a crucial step to encode the discrete...

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