the x1 and the a and the loss function is simply the negative log likelihood of that but what does that mean so will will make it easier if if you have this this procedure right here where you have demo event this up here this is demo and this is a test event how are you going this entire procedure how are you going to learn the energy function well in this case this entire procedure this entire thing is one training sample sample but usually we have input and label and now here it's much more complicated because so we have input