Available Losses

Loss Name	Loss Identifier	Reference
Mean Squared Error (MSE) / L2 Loss	mse
Mean Absolute Error (MAE) / L1 Loss	l1
Smooth L1 Loss	smooth_l1
Learned Perceptual Image Patch Similarity (LPIPS)	lpips	https://arxiv.org/abs/1801.03924
Structural Similarity (SSIM)	ssim	https://ieeexplore.ieee.org/document/1284395
Peak Signal to Noise Ratio (PSNR)	psnr
Fréchet Video Distance (FVD)	fvd	https://arxiv.org/abs/1812.01717