Attention+InceptionResnetv2+Focal Loss
https://www.kaggle.com/c/imet-2019-fgvc6
To run the demo, create a new kernel and add inceptionresnetV2 dataset.
https://codelabs-preview.appspot.com/?file_id=1LK-uOEumO3PjYakLAQoHlfD7CGA9lMgbcTr6ck_bC3k#0
https://codelabs-preview.appspot.com/?file_id=16deNELCtWJKZ4WCxMVpFEOE45T-c777FQtc6w9rmcg4#0