Deep Convolutional GANs

After discussing the basic concepts of adversarial training, we can apply them to a practical example of DCGANs. In fact, even if it's possible to use only dense layers (MLPs), as we want to work with images, it's preferable to employ convolutions and transpose convolutions to obtain the best results.

Example of DCGAN with TensorFlow

In this example, we want to build a DCGAN (proposed in Radford A., Metz L., Chintala S., Unsupervised Representation Learning with Deep Convolutional Generative Adversarial Networks, arXiv:1511.06434 [cs.LG]) with the Fashion-MNIST dataset (obtained through the TensorFlow/Keras helper function). As the training speed is not very high, we limit the number of samples to 5,000, but I suggest repeating the experiment with larger values. The first step is loading and normalizing (between -1 and 1) the dataset:

import tensorflow as tf
import numpy as np
nb_samples = 5000
(X_train, _), (_, _) = \
        tf.keras...