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Hands-On Natural Language Processing with Python

You're reading from   Hands-On Natural Language Processing with Python A practical guide to applying deep learning architectures to your NLP applications

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Product type Paperback
Published in Jul 2018
Publisher Packt
ISBN-13 9781789139495
Length 312 pages
Edition 1st Edition
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Authors (5):
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Rajalingappaa Shanmugamani Rajalingappaa Shanmugamani
Author Profile Icon Rajalingappaa Shanmugamani
Rajalingappaa Shanmugamani
Chaitanya Joshi Chaitanya Joshi
Author Profile Icon Chaitanya Joshi
Chaitanya Joshi
Auguste Byiringiro Auguste Byiringiro
Author Profile Icon Auguste Byiringiro
Auguste Byiringiro
Rajesh Arumugam Rajesh Arumugam
Author Profile Icon Rajesh Arumugam
Rajesh Arumugam
Karthik Muthuswamy Karthik Muthuswamy
Author Profile Icon Karthik Muthuswamy
Karthik Muthuswamy
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Table of Contents (15) Chapters Close

Preface 1. Getting Started 2. Text Classification and POS Tagging Using NLTK FREE CHAPTER 3. Deep Learning and TensorFlow 4. Semantic Embedding Using Shallow Models 5. Text Classification Using LSTM 6. Searching and DeDuplicating Using CNNs 7. Named Entity Recognition Using Character LSTM 8. Text Generation and Summarization Using GRUs 9. Question-Answering and Chatbots Using Memory Networks 10. Machine Translation Using the Attention-Based Model 11. Speech Recognition Using DeepSpeech 12. Text-to-Speech Using Tacotron 13. Deploying Trained Models 14. Other Books You May Enjoy

Implementation of Tacotron with Keras

In this section, we will present an implementation of Tacotron by using Keras on top of TensorFlow. The advantage of Keras over vanilla TensorFlow is that it allows for faster prototyping. This is permitted by its high modularity. However, in terms of flexibility, TensorFlow has an edge over Keras, even if it requires more effort to master it. At the moment, TensorFlow also offers more built-in functionalities (for example, attention mechanisms), some of which will have to be re-implemented here.

We will use Keras 2.1.5 with TensorFlow 1.6.0 as a backend.

The code base is organized as follows:

  • The /data folder is meant to contain the raw dataset, and will be enhanced through several processing steps.
  • The /model folder contains the following:
    • building_blocks.py, which defines all of the essential units of the Tacotron model
    • tacotron_model...
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