Bengali AI challenge Kaggle silver medal

I took part in character class recognition challenge Bengali AI challenge.
I used se-resnetx50 with
augmentations: identity/mixup/cutmix/cutout in proportion: 5%,45%,45%,5%.
also other augmentations like rotation/shear/strech/grid_distortion/contrast/fade.
image_size: 128x128.
70 epochs.
initial_lr: 0.05 reduced to 0.001
optimizer sgd
local random split 80/20 cv local score: 0.990,
lb public score: 0.9728,
lb private score: 0.9373
will upload code on github