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arXiv 2007.09579cs.GT
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收入损失可忽略的福利保持$\varepsilon$-BIC到BIC的转换

Welfare-Preserving $\varepsilon$-BIC to BIC Transformation with Negligible Revenue Loss

Vincent Conitzer, Zhe Feng, David C. Parkes, Eric Sodomka

摘要:

在本文中,我们提供了一个转换从一个$\varepsilon$-BIC机制到一个确切的BIC机制没有任何损失的社会福利和可加性和可忽略的收入损失。这是第一个$\varepsilon$-BIC到BIC的转换,它保留了福利,并提供了可忽略的收入损失。鉴于维持社会福利的需要,收入损失的范围很紧。以前的$\varepsilon$-BIC到BIC转换保留了社会福利,但没有收入保证~\citep{BeiHuang11},或者遭受福利损失,同时招致具有乘法和加法项的收入损失,例如~ \citet{DasWeinberg12, Rubinstein18, Cai19}。通过我们的转换实现的收入损失是这些早期的方法无法比拟的,可以显着更少。\newnew{Our approach is different from the previous replica-surrogate matching methods and we directly make use of a directed and weighted type graph (induced by the types' regret), one for each agent. The transformation runs a \emph{fractional rotation step} and a \emph{payment reducing step} iteratively to make the mechanism Bayesian incentive compatible.}我们还分析了$\varepsilon$-预期的事后IC($\varepsilon$-EEIC)机制~\citep{DuettingFJLLP12}。我们提供了一个福利保持变换在这种设置具有相同的收入损失保证均匀型分布,并给出了一个不可能的结果为非均匀分布。我们将这种转换应用于基于线性规划和基于机器学习的自动机制设计方法。

英文摘要:

In this paper, we provide a transform from an $\varepsilon$-BIC mechanism into an exactly BIC mechanism without any loss of social welfare and with additive and negligible revenue loss. This is the first $\varepsilon$-BIC to BIC transformation that preserves welfare and provides negligible revenue loss. The revenue loss bound is tight given the requirement to maintain social welfare. Previous $\varepsilon$-BIC to BIC transformations preserve social welfare but have no revenue guarantee~\citep{BeiHuang11}, or suffer welfare loss while incurring a revenue loss with both a multiplicative and an additive term, e.g.,~\citet{DasWeinberg12, Rubinstein18, Cai19}. The revenue loss achieved by our transformation is incomparable to these earlier approaches and can be significantly less. \newnew{Our approach is different from the previous replica-surrogate matching methods and we directly make use of a directed and weighted type graph (induced by the types' regret), one for each agent. The transformation runs a \emph{fractional rotation step} and a \emph{payment reducing step} iteratively to make the mechanism Bayesian incentive compatible.} We also analyze $\varepsilon$-expected ex-post IC ($\varepsilon$-EEIC) mechanisms~\citep{DuettingFJLLP12}. We provide a welfare-preserving transformation in this setting with the same revenue loss guarantee for uniform type distributions and give an impossibility result for non-uniform distributions. We apply the transform to linear-programming based and machine-learning based methods of automated mechanism design.

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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