In the TensorFlow source that we set up in the previous chapter, there's a Python script, tensorflow/examples/image_retraining/retrain.py, that you can use to retrain the Inception v3 or MobileNet models. Before we run the script to retrain the Inception v3 model for our dog breed recognition, we need to first download the Stanford Dogs Dataset (http://vision.stanford.edu/aditya86/ImageNetDogs), which contains images of 120 dog breeds (you only need to download the Images in the link, not the Annotations).
Untar the downloaded dog images.tar file in ~/Downloads, and you should see a list of folders in ~/Downloads/Images, as shown in the following screenshot. Each folder corresponds to one dog breed and contains about 150 images (you don't need to supply explicit labels for images as the folder names are used to label the images...
