PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Distilling the wisdom of crowds: weighted aggregation of decisions on multiple issues
Eyal Baharad, Jacob Goldberger, Moshe Koppel and Shmuel Nitzan
JAAMAS 2009.

Abstract

Given the judgments of multiple voters regarding some issue, it is generally assumed that the best way to arrive at some collective judgment is by following the majority. We consider here the now common case in which each voter expresses some (binary) judgment regarding each of a multiplicity of independent issues and assume that each voter has some fixed (unknown) probability of making a correct judgment for any given issue. We leverage the fact that multiple votes by each voter are known in order to demonstrate, both analytically and empirically, that a method based on maximum likelihood estimation is superior to the simple majority rule for arriving at true collective judgments.

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EPrint Type:Article
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Computational, Information-Theoretic Learning with Statistics
Theory & Algorithms
ID Code:6027
Deposited By:Moshe Koppel
Deposited On:08 March 2010