On Consistent Surrogate Risk Minimization and Property Elicitation

author: Shivani Agarwal, Department of Computer Science and Automation (CSA), Indian Institute of Science Bangalore
published: Aug. 20, 2015,   recorded: July 2015,   views: 2179


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Surrogate risk minimization is a popular framework for supervised learning; property elicitation is a widely studied area in probability forecasting, machine learning, statistics and economics. In this paper, we connect these two themes by showing that calibrated surrogate losses in supervised learning can essentially be viewed as eliciting or estimating certain properties of the underlying conditional label distribution that are sufficient to construct an optimal classifier under the target loss of interest. Our study helps to shed light on the design of convex calibrated surrogates. We also give a new framework for designing convex calibrated surrogates under low-noise conditions by eliciting properties that allow one to construct ‘coarse’ estimates of the underlying distribution.

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