Date of Original Version

8-2012

Type

Conference Proceeding

Rights Management

Copyright*©*2012*by*AUAI*Press

Abstract or Description

We consider the problem of selecting a subset of alternatives given noisy evaluations of the relative strength of different alternatives. We wish to select a k-subset (for a given k) that provides a maximum likelihood estimate for one of several objectives, e.g., containing the strongest alternative. Although this problem is N P-hard, we show that when the noise level is sufficiently high, intuitive methods provide the optimal solution. We thus generalize classical results about singling out one alternative and identifying the hidden ranking of alternatives by strength. Extensive experiments show that our methods perform well in practical settings.

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Published In

Proceedings of the Conference on Uncertainly in Artificial Intelligence (UAI), 2012, 695-704.