contrasted loss and that's very similar to sim clear to this contrastive loss so what you'll do and they describe it very very well here so what you'll do is given a randomly sampled mini batch of images each image is augmented twice using random crop color distortion and Gaussian blur creating two views of the same example okay so you have an image in your mini batch each image you take and you make two versions of it and each version you crop real random crop somewhere so version one could be random cropped here version cook two could be