in data_loaders.py [0:0]
def get_validation_examples(self, index):
# select an object and a principle grasp
obj, obj_class = self.names[index]
orig_num = 0
# select the remaining grasps deterministically
nums = [(orig_num + i) % 5 for i in range(self.args.num_grasps)]
return obj, obj_class, orig_num, nums