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Coarse Preference Elicitation

By Yaron Azrieli
Location Bloomfield 527
Academic Program: Please choose
 
Monday 17 June 2019, 11:30 - 12:30
A planner wants to extract information about an agent’s preference relation, but not necessarily the entire relation. Formally, a partition of the set of all possible orderings of alternatives (a ‘type space’) is given, and the planner wants to know to which partition element (‘type’) the agent’s true preference belongs. We say that a type space is elicitable if there exists a mechanism mapping types to (possibly random) outcomes in which the agent strictly prefers truth-telling over lying. In the Savage framework a type space is elicitable if and only if it can be elicited by offering the agent a list of menus and paying one randomly-chosen choice. When the planner can use objective lotteries, more type spaces can be elicited. 
(Joint with  Christopher Chambers and Paul Healy)