arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1410.1920cs.GT
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隐私游戏

Privacy Games

Yiling Chen, Or Sheffet, Salil Vadhan

摘要:

分析隐私关注对自私效用最大化代理行为的影响的问题最近受到了广泛的关注。隐私问题通常通过改变代理的效用函数来建模,以考虑他们的隐私损失。这样的隐私意识的代理更喜欢采取随机化的策略,即使在非常简单的游戏中,非隐私意识的代理玩纯策略。在某些情况下,隐私感知代理的行为遵循随机响应的框架,这是一种众所周知的保护差分隐私的机制。我们的工作旨在更好地理解代理人在明确给出隐私问题的环境中的行为。我们考虑一个玩具设置,其中代理A,在试图发现的秘密类型的代理B,提供B的礼物,一种类型的B代理喜欢和其他类型的不喜欢。与以前的作品不同,B对她的类型保密的动机并不是B的效用函数考虑隐私的结果,而是B和A之间支付的形式。我们研究了三种不同类型的支付功能,并分析了B的行为,在每个由此产生的游戏。正如我们所展示的,在某些支付下,B的行为与具有硬连接隐私问题的代理的行为非常不同,甚至可能是确定性的。在不同的支付下,我们证明了B的BNE策略确实落入随机反应的框架。

英文摘要:

The problem of analyzing the effect of privacy concerns on the behavior of selfish utility-maximizing agents has received much attention lately. Privacy concerns are often modeled by altering the utility functions of agents to consider also their privacy loss. Such privacy aware agents prefer to take a randomized strategy even in very simple games in which non-privacy aware agents play pure strategies. In some cases, the behavior of privacy aware agents follows the framework of Randomized Response, a well-known mechanism that preserves differential privacy. Our work is aimed at better understanding the behavior of agents in settings where their privacy concerns are explicitly given. We consider a toy setting where agent A, in an attempt to discover the secret type of agent B, offers B a gift that one type of B agent likes and the other type dislikes. As opposed to previous works, B's incentive to keep her type a secret isn't the result of "hardwiring" B's utility function to consider privacy, but rather takes the form of a payment between B and A. We investigate three different types of payment functions and analyze B's behavior in each of the resulting games. As we show, under some payments, B's behavior is very different than the behavior of agents with hardwired privacy concerns and might even be deterministic. Under a different payment we show that B's BNE strategy does fall into the framework of Randomized Response.

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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