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Minimizing Expected Losses in Perturbation Models with Multidimensional Parametric Min-cuts
Proceedings of the 31st Conference on Uncertainty in Artificial Intelligence, PMLR R13:960-968, 2015.
Abstract
We consider the problem of learning perturbation-based probabilistic models by computing and differentiating expected losses. This is a challenging computational problem that has traditionally been tackled using Monte Carlo-based methods. In this work, we show how a generalization of parametric min-cuts can be used to address the same problem, achieving high accuracy of faster than a sampling-based baseline. Utilizing our proposed \textit{Skeleton Method}, we show that we can learn the perturbation model so as to directly minimize expected losses. Experimental results show that this approach offers promise as a new way of training structured prediction models under complex loss functions.