space and sort of interpolate from you know one phase to another this is you know not as I mean this is a few years old but you know it's it's kind of at the time similar to the the Gans of the time there's been a lot of progress in Gans not so much in this particular approach but but it it's kind of interesting we're approaching the problem now there is an issue with sparse coding which is that if I give you a why you have to run an optimization algorithm to find the optimal Z that minimizes the energy that