arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.05903math.STstat.MEstat.TH
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并行数据流中的复合顺序变点检测

Compound Sequential Change-point Detection in Parallel Data Streams

Yunxiao Chen, Xiaoou Li

摘要:

我们考虑顺序变化点检测并行数据流,其中每个流有自己的变化点。一旦在数据流中检测到变化,该流将永久停用。目标是最大化变更前流的正常操作,同时在所有时间点控制活动流中变更后流的比例。以贝叶斯公式,我们开发了一个复合决策框架,这个问题。提出了一个程序,是一致的所有顺序的程序,控制预期比例的变更后的流在所有时间点之间的最佳。我们还研究了所提出的方法的渐近行为时,数据流的数量越来越大。数值例子来说明所提出的方法的使用和性能。

英文摘要:

We consider sequential change-point detection in parallel data streams, where each stream has its own change point. Once a change is detected in a data stream, this stream is deactivated permanently. The goal is to maximize the normal operation of the pre-change streams, while controlling the proportion of post-change streams among the active streams at all time points. Taking a Bayesian formulation, we develop a compound decision framework for this problem. A procedure is proposed that is uniformly optimal among all sequential procedures which control the expected proportion of postchange streams at all time points. We also investigate the asymptotic behavior of the proposed method when the number of data streams grows large. Numerical examples are provided to illustrate the use and performance of the proposed method.

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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