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Hands-On Neural Networks with Keras

You're reading from   Hands-On Neural Networks with Keras Design and create neural networks using deep learning and artificial intelligence principles

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Product type Paperback
Published in Mar 2019
Publisher Packt
ISBN-13 9781789536089
Length 462 pages
Edition 1st Edition
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Author (1):
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Niloy Purkait Niloy Purkait
Author Profile Icon Niloy Purkait
Niloy Purkait
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Table of Contents (16) Chapters Close

Preface 1. Section 1: Fundamentals of Neural Networks FREE CHAPTER
2. Overview of Neural Networks 3. A Deeper Dive into Neural Networks 4. Signal Processing - Data Analysis with Neural Networks 5. Section 2: Advanced Neural Network Architectures
6. Convolutional Neural Networks 7. Recurrent Neural Networks 8. Long Short-Term Memory Networks 9. Reinforcement Learning with Deep Q-Networks 10. Section 3: Hybrid Model Architecture
11. Autoencoders 12. Generative Networks 13. Section 4: Road Ahead
14. Contemplating Present and Future Developments 15. Other Books You May Enjoy

Probing the data

Next, we simply load the fashion_mnist dataset that's contained in Keras. Note that while we have loaded the labels for each image as well, this is not necessary for the task we are about to perform. All we need are the input images, which our shallow autoencoder will regenerate:

(x_train, y_train), (x_test, y_test) = fashion_mnist.load_data()
x_train.shape, x_test.shape, type(x_train)
((60000, 28, 28), (10000, 28, 28), numpy.ndarray)
plt.imshow(x_train[1], cmap='binary')

Following is the output:

We can proceed by checking the dimensions and types of the input images, and then plot out a single example from the training data for our own visual satisfaction. The example appears to be a casual T-shirt with some undecipherable content written on it. Great – now, we can move on to defining our autoencoder model!

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