input so that's the second point to which we are doing and surprisingly or not we will do that by over parametrization so let's still look at the phase retrieval so the problem the regression problem we are trying to solve here is still the same so phase retrieval with random gaussian data and the teacher coming from a gaussian and generating the labels this didn't change but what changes now is the loss function so now the loss function that i will be considering doesn't correspond anymore to simple the simplest neural network with no