CW2 corsework2 code reference of focal loss https://github.com/AdeelH/pytorch-multi-class-focal-loss reference of dice loss https://github.com/shuaizzZ/Dice-Loss-PyTorch reference of UNet https://github.com/milesial/Pytorch-UNet I finished many tests about leanring rate, channels, loss functions, all of them recorded in CW2.xls