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arXiv 1806.02015cs.ITmath.IT
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带隐私约束的分布式假设检验

Distributed Hypothesis Testing with Privacy Constraints

Atefeh Gilani, Selma Belhadj Amor, Sadaf Salehkalaibar, Vincent Y. F. Tan

摘要:

我们重新审视分布式假设检验(或假设检验与通信约束)的问题,从隐私的观点。发送者观察的不是直接的原始数据,而是经过净化或随机化的原始数据,我们对原始数据和随机化数据之间的互信息施加了一个上界。在这种情况下,也被提供有辅助信息的接收器需要对零假设或备择假设是否有效做出决定。首先,我们提供了一个一般的下限的II型指数的任意一对假设。接下来,我们证明,如果备择假设下的分布是零下分布的边缘的乘积(即,测试独立性),则指数是确切知道的。此外,我们还证明了强逆性质成立。利用欧氏信息论的思想,我们还提供了一个近似表达式的指数时,通信速率低,隐私级别高。最后,我们用一个二进制和高斯的例子来说明我们的结果。

英文摘要:

We revisit the distributed hypothesis testing (or hypothesis testing with communication constraints) problem from the viewpoint of privacy. Instead of observing the raw data directly, the transmitter observes a sanitized or randomized version of it. We impose an upper bound on the mutual information between the raw and randomized data. Under this scenario, the receiver, which is also provided with side information, is required to make a decision on whether the null or alternative hypothesis is in effect. We first provide a general lower bound on the type-II exponent for an arbitrary pair of hypotheses. Next, we show that if the distribution under the alternative hypothesis is the product of the marginals of the distribution under the null (i.e., testing against independence), then the exponent is known exactly. Moreover, we show that the strong converse property holds. Using ideas from Euclidean information theory, we also provide an approximate expression for the exponent when the communication rate is low and the privacy level is high. Finally, we illustrate our results with a binary and a Gaussian example.

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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