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arXiv 0907.5219cs.GT
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关于真实近似机制的能力的注记

A Note on the Power of Truthful Approximation Mechanisms

Shahar Dobzinski

摘要:

我们研究的权力多项式时间的真实机制相比,多项式时间(非真实)算法。我们发现,有一个设置中,确定性多项式时间的真实机制不能保证有界的近似比,但存在一个不真实的FPTAS。我们还表明,在相同的设置有一个普遍真实的机制,提供了一个近似比为2。这表明,真实性的成本是无限的。证明几乎是标准的领域,并遵循已知的结果。

英文摘要:

We study the power of polynomial-time truthful mechanisms comparing to polynomial time (non-truthful) algorithms. We show that there is a setting in which deterministic polynomial-time truthful mechanisms cannot guarantee a bounded approximation ratio, but a non-truthful FPTAS exists. We also show that in the same setting there is a universally truthful mechanism that provides an approximation ratio of 2. This shows that the cost of truthfulness is unbounded. The proofs are almost standard in the field and follow from known results.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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