A Cost-Effective Framework for Preference Elicitation and Aggregation
2018
We propose a cost-effective framework for preference elicitation and aggregation under 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 better group decisions.
We illustrate the viability of the framework with an experiment on Amazon Mechanical Turk, which estimates the cost of answering different types of elicitation questions. We compare the prediction accuracy of our framework when adopting various information criteria that evaluate the expected information gain from a question. Our experiments show carefully designed information criteria are much more efficient than randomly asking questions given budget constraint.
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