graphatbottleneck

handles the bottleneck transformations for a pure graph ae, return g, compressed, new input, shallfp=True=>convert vector in matrix (with gfromparam), can use redense to add a couple dense layers around the bottleneck (defined by m.redense*)

Arguments:

• g: a grap object
• m: a constant object (generate for example by getm())
• shallfp=True: reshapes the 2 dimensional vector (-1, latent_size) into a 3 dimensional vector (-1,g.s.gs,g.s.param) after this function only if this is true

Returns:

• g: the updated grap object