Hatfield, John William; Immorlica, Nicole; Kominers, … - In: Games and Economic Behavior 75 (2012) 2, pp. 639-645
We provide an algorithm for testing the substitutability of a length-N preference relation over a set of contracts X in time O(|X|3⋅N3). Access to the preference relation is essential for this result: We show that a substitutability-testing algorithm with access only to an agentʼs choice...