Training fast neural-style transfer models

In this section, we'll show you how to train models using the fast neural-style transfer algorithm with TensorFlow. Perform the following steps to train such a model:

1. On a Terminal of your Mac or preferably GPU-powered Ubuntu, run git clone https://github.com/jeffxtang/fast-style-transfer, which is a fork of a nice TensorFlow implementation of Johnson's fast-style transfer, modified to allow the trained model to be used in iOS or Android apps.
2. cd to the fast-style-transfer directory, then run the setup.sh script to download the pre-trained VGG-19 model file as well as the MS COCO training dataset, which we mentioned in the previous chapter – note that it can take several hours to download the large files.
3. Run the following commands to create checkpoint files with training using a style image named starry_night.jpg and...