these this type of architectures we have sort of a commercial net with decreasing resolution followed by another one with sort of increasing resolution which some people called accomplished on that this is a paper from I guess 2012 or so or 11 by my colleague Bob Fergus on this idea geek on visual net and this architecture is used quite a lot in image segmentation particularly for applications in medical image analysis and some people call this kind of architecture a unit because of the of the shape when you represent it this way