a a way to construct architectures and they took those architectures and they rank them by how well they score on C 410 so there are very good architectures which are here there are good ones there are mediocre ones and then the bad ones okay and you can see that the histograms here of whatever they measure they look quite different so the histograms with the good ones they all have kind of spiky around zero and the histograms of the bad ones all sort of look spread out so this is the measure that they're going to propose is they have some sort