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A Cost-Effective Framework for Preference Elicitation and Aggregation
Proceedings of the 34th Conference on Uncertainty in Artificial Intelligence, PMLR R16:445-455, 2018.
Abstract
We propose a cost-effective framework for preference elicitation and aggregation under the Plackett-Luce model with features. Given a budget, our framework iteratively computes the most cost-effective elicitation questions in order to help the agents make a better group decision. We illustrate the viability of the framework with experiments on Amazon Mechanical Turk, which we use to estimate the cost of answering different types of elicitation ques- tions. We compare the prediction accuracy of our framework when adopting various infor- mation criteria that evaluate the expected infor- mation gain from a question. Our experiments show carefully designed information criteria are much more efficient, i.e., they arrive at the correct answer using fewer queries, than ran- domly asking questions given the budget con- straint.