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Distributed Simulation of Continuous Random Variables

机译:连续随机变量的分布式仿真

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摘要

We establish the first known upper bound on the exact and Wyner’s common information of continuous random variables in terms of the dual total correlation between them (which is a generalization of mutual information). In particular, we show that when the pdf of the random variables is log-concave, there is a constant gap of between this upper bound and the dual total correlation lower bound that does not depend on the distribution. The upper bound is obtained using a computationally efficient dyadic decomposition scheme for constructing a discrete common randomness variable from which the random variables can be simulated in a distributed manner. We then bound the entropy of using a new measure, which we refer to as the erosion entropy.
机译:我们根据连续随机变量的精确和Wyner的公共信息之间的双重总相关性(这是互信息的一般化)来确定第一个已知的上限。特别地,我们表明,当随机变量的pdf为对数凹形时,该上限与对偶总相关下限之间存在恒定的间隙,该间隙不依赖于分布。使用计算有效的二元分解方案来获得上限,该分解方案用于构造离散的公共随机性变量,可以从该公共随机性变量以分布式方式模拟随机变量。然后,我们使用新度量来限制熵,我们将其称为侵蚀熵。

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