alright that's the algorithm in a high-level they do show their loss here you see the loss ultimately is going to be so it's going to be over this matching right here that's the minimum bipartite assignment that basically minimizes this total loss over your prediction and label matchings and the loss they come up with here I said you have to give the algorithm a loss is this one and they kind of go into how they do it I don't think it's super important so the the class algorithm sorry the loss on the class labels I