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arXiv 1601.01152cs.ITmath.IT
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基于有损数据压缩的分布式二进制检测

Distributed Binary Detection with Lossy Data Compression

Gil Katz, Pablo Piantanida, Mérouane Debbah

摘要:

考虑这样一个问题:在一个两节点系统中,一个统计学家从一个发送器接收到关于一个无记忆过程的边际观测的速率受限信息,该过程是从两个可能的分布中生成的。使用它自己的观察,这个接收器需要首先通过声明过程的联合分布来识别其发送者的合法性,然后根据这种认证,它生成满足平均每个字母失真的观察的适当重建。通过相应的速率-误差-失真区域来研究该设置的性能,该区域描述了通信速率、由检测引起的误差指数和由源重构引起的失真之间的权衡。在独立性测试的特殊情况下,替代假设意味着源是独立的,最佳率误差失真区域的特点。最后给出了该方法在二进制对称信源中的应用实例,并给出了率误差失真域的显式表达式。“一般假设”的情况下也进行了调查。一个新的可实现的率误差失真区域的基础上,使用非渐近分箱,提高质量的通信描述。进一步提高性能的一般情况下,被证明是可能的,当源重建的要求放宽,这与一般假设的情况下。

英文摘要:

Consider the problem where a statistician in a two-node system receives rate-limited information from a transmitter about marginal observations of a memoryless process generated from two possible distributions. Using its own observations, this receiver is required to first identify the legitimacy of its sender by declaring the joint distribution of the process, and then depending on such authentication it generates the adequate reconstruction of the observations satisfying an average per-letter distortion. The performance of this setup is investigated through the corresponding rate-error-distortion region describing the trade-off between: the communication rate, the error exponent induced by the detection and the distortion incurred by the source reconstruction. In the special case of testing against independence, where the alternative hypothesis implies that the sources are independent, the optimal rate-error-distortion region is characterized. An application example to binary symmetric sources is given subsequently and the explicit expression for the rate-error-distortion region is provided as well. The case of "general hypotheses" is also investigated. A new achievable rate-error-distortion region is derived based on the use of non-asymptotic binning, improving the quality of communicated descriptions. Further improvement of performance in the general case is shown to be possible when the requirement of source reconstruction is relaxed, which stands in contrast to the case of general hypotheses.

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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