(Classifier) Training Pretrain:2015Data →Train:2019Data(30epoch) Preprocessing Resize(300x300) Augmentation HorizontalFlip(0.5), Vertical(0.2), Scale(±0.1), translate(±20),Rotation(±10), Shear(±5), Gaussiannoise, etc... Validation Hold-out(test_size=0.15, stratify=class) TTA 4TTA(Default, Horizontalflip, Verticalflip, Horizontal&Verticalflip)