More Powerful and Simpler Cost-Sharing Methods

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More Powerful and Simpler Cost-Sharing Methods
We provide a new technique to derive group strategyproof mechanisms for the cost-sharing problem. Our technique is simpler and provably more powerful than the existing one based on so called crossmonotonic cost-sharing methods given by Moulin and Shenker [1997]. Indeed, our method yields the first polynomial-time mechanism for the Steiner tree game which is group strategyproof, budget balance and also meets other standard requirements (No Positive Transfer, Voluntary Participation and Consumer Sovereignty). A known result by Megiddo [1978] implies that this result cannot be achieved with cross-monotonic costsharing methods, even if using exponential-time mechanisms.
Paolo Penna, Carmine Ventre
Added 02 Jul 2010
Updated 02 Jul 2010
Type Conference
Year 2004
Where WAOA
Authors Paolo Penna, Carmine Ventre
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