Create Imagenet Metaclasses

Use parse.py to create metaclasses to ImageNet by automatically merging classes along the paths defined by WordNet. Requires the files data.noun from WordNet and either imagenet_synsets.txt (ls ILSVRC2012_train > imagenet_synsets.txt) or imagenet_counts (use count_imagenet.py and point to the ImageNet Folder), all three are provided here.

Outputs the following files:

• out.yaml the merged version of the synset tree.
• class_dict.yaml a dictionary mapping the old classes to the new merged classes.
• leaf_info.txt the resulting classes ordered by size.

Here is an example of the resulting sizes for a "bottom-up" merge