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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 FREE CHAPTER 2. Classifying Handwritten Digits with a Feedforward Network 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

Chapter 3. Encoding Word into Vector

In the previous chapter, inputs to neural nets were images, that is, vectors of continuous numeric values, the natural language for neural nets. But for many other machine learning fields, inputs may be categorical and discrete.

In this chapter, we'll present a technique known as embedding, which learns to transform discrete input signals into vectors. Such a representation of inputs is an important first step for compatibility with the rest of neural net processing.

Such embedding techniques will be illustrated with an example of natural language texts, which are composed of words belonging to a finite vocabulary.

We will present the different aspects of embedding:

  • The principles of embedding
  • The different types of word embedding
  • One hot encoding versus index encoding
  • Building a network to translate text into vectors
  • Training and discovering the properties of embedding spaces
  • Saving and loading the parameters of a model
  • Dimensionality reduction...
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