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Apache Spark Deep Learning Cookbook

You're reading from   Apache Spark Deep Learning Cookbook Over 80 best practice recipes for the distributed training and deployment of neural networks using Keras and TensorFlow

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Product type Paperback
Published in Jul 2018
Publisher Packt
ISBN-13 9781788474221
Length 474 pages
Edition 1st Edition
Languages
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Authors (2):
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Ahmed Sherif Ahmed Sherif
Author Profile Icon Ahmed Sherif
Ahmed Sherif
Amrith Ravindra Amrith Ravindra
Author Profile Icon Amrith Ravindra
Amrith Ravindra
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Toc

Table of Contents (15) Chapters Close

Preface 1. Setting Up Spark for Deep Learning Development FREE CHAPTER 2. Creating a Neural Network in Spark 3. Pain Points of Convolutional Neural Networks 4. Pain Points of Recurrent Neural Networks 5. Predicting Fire Department Calls with Spark ML 6. Using LSTMs in Generative Networks 7. Natural Language Processing with TF-IDF 8. Real Estate Value Prediction Using XGBoost 9. Predicting Apple Stock Market Cost with LSTM 10. Face Recognition Using Deep Convolutional Networks 11. Creating and Visualizing Word Vectors Using Word2Vec 12. Creating a Movie Recommendation Engine with Keras 13. Image Classification with TensorFlow on Spark 14. Other Books You May Enjoy

Preparing the data


A number of data-preprocessing steps are to be performed before the data is fed into the model. This section will describe how to clean the data and prepare it so it can be fed into the model.

Getting ready

All the text from the .txt files is first converted into one big corpus. This is done by reading each sentence from each file and adding it to an empty corpus. A number of preprocessing steps are then executed to remove irregularities such as white spaces, spelling errors, stopwords, and so on. The cleaned text data has to then be tokenized, and the tokenized sentences are added to an empty array by running them through a loop.

How to do it...

The steps are as follows:

  1. Type in the following commands to search for the .txt files within the working directory and print the names of the files found:

book_names = sorted(glob.glob("./*.txt"))
print("Found books:")
book_names

In our case, there are five books named got1, got2, got3, got4, and got5 saved in the working directory....

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