[teshier-A]

My experience with MMD is that unless you've been using it and are familiar with other kernel methods, you probably won't know what to do with it : what kernel do I use ? how can I test for significance (in any sense of the word) ? Add the (last I checked) horrendous complexity, to me it looks like a less usable mutual information (or KL div) and without all the nice information theory around it.