Reviews: Multiclass Learning from Contradictions

Originality: The proposed method is a novel combination of existing methods. This combination comes with theoretical guarantees and practical tools to deal with the obvious tuning complexity. Quality: All claims and proposition are justified and detailed (if not in the paper, in the supplementary material). I did not find flaws in it. The interest of incorporating universum examples is shown (already done in binary case) and the motivation to adapt the framework to multiclass case, is established: forcing a universum example to be neutral for all classes makes sense.