why test_input_size in timm models config in huggingface ?

[santoshcoder23]

I am seeing many of the TIMM models are having test_input_size in the config.json file. What is the purpose of this size?

for example: https://huggingface.co/timm/resnet50.a1_in1k/blob/main/config.json "input_size": [ 3, 224, 224] "test_input_size": [3,288,288]

Please explain why these two shapes?

[rwightman]

Models trained with agressive aug usually have a larger optimal test resolution ... https://arxiv.org/abs/1906.06423 ... based on comparisons I've tested and set a higher optimal test resolution for many models. There are probably others that benefit but each ones requires verification so it's not set for everything.