Notes for the updates of the performance table

[taehoonlee]

Recently, I have updated the performance table to follow the recent report format. I reviewed 10 recent papers as follows, and found that error rates and 10-crop testing are no longer used for evaluation after about 2017.

	measure	10-crop
ResNeXt (CVPR 2017)	err	O
DenseNet (CVPR 2017)	err	O
PolyNet (CVPR 2017)	err	O
DPN (NIPS 2017)	err	-
SENet (CVPR 2018)	err	-
MobileNetV2 (CVPR 2018)	acc	-
NASNet (CVPR 2018)	acc	-
PNASNet (ECCV 2018)	acc	-
AmoebaNet (AAAI 2019)	acc	-
EfficientNet (ICML 2019)	acc	-

For the above reason, the recent commit replaces the top-k error rates with accuracies and removes the 10-5 column (the top-5 score with 10 crops).