Reviews: Cooperative Graphical Models

I think the proposed graphical model is interesting and novel. The authors provide a lower bound and a fully convex upper bound for partition function. In particular, variational upper/lower bound are formulated by using pairwise graphical models, e.g. The author also provides algorithms, Frank-Wolfe, PGD and BP, for finding upper/lower bound. The experimental results shows that cooperative graphical models and its variational methods performs better than pairwise graphical models for image segmentation.