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arXiv 1304.2172cs.ITcs.GTmath.IT
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具有训练数据的二元假设检验对策

Binary Hypothesis Testing Game with Training Data

Mauro Barni, Benedetta Tondi

摘要:

我们引入了一个博弈论的框架来研究假设检验问题,在一个对手的存在,旨在防止一个正确的决定。具体地说,本文考虑了一种情况下,分析人员必须决定是否已根据概率质量函数(pmf)P_X或没有测试序列。反过来,对手的目标是根据不同的pmf生成一个序列,并以这种方式修改它,以引起决策错误。P_X仅通过一个或多个训练序列已知。在假设分析者只依赖于测试序列的一阶统计量的条件下,我们得到了博弈的渐近均衡,并计算了当测试序列的长度趋于无穷大时博弈的渐近支付.我们引入了不可分辨域的概念,它是在攻击存在时不能可靠地与P_X区分开的pmf的集合。考虑了两种不同的情况:在第一种情况下,分析师和对手共享相同的训练序列,在第二种情况下,他们依赖于独立的序列。所得到的结果进行比较的一个版本的游戏中的pmf P_X是完全已知的分析师和对手。

英文摘要:

We introduce a game-theoretic framework to study the hypothesis testing problem, in the presence of an adversary aiming at preventing a correct decision. Specifically, the paper considers a scenario in which an analyst has to decide whether a test sequence has been drawn according to a probability mass function (pmf) P_X or not. In turn, the goal of the adversary is to take a sequence generated according to a different pmf and modify it in such a way to induce a decision error. P_X is known only through one or more training sequences. We derive the asymptotic equilibrium of the game under the assumption that the analyst relies only on first order statistics of the test sequence, and compute the asymptotic payoff of the game when the length of the test sequence tends to infinity. We introduce the concept of indistinguishability region, as the set of pmf's that can not be distinguished reliably from P_X in the presence of attacks. Two different scenarios are considered: in the first one the analyst and the adversary share the same training sequence, in the second scenario, they rely on independent sequences. The obtained results are compared to a version of the game in which the pmf P_X is perfectly known to the analyst and the adversary.

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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