arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1702.05698cs.LGcs.CVstat.APstat.COstat.ML
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带变点检测的在线鲁棒主元分析

Online Robust Principal Component Analysis with Change Point Detection

SAS Institute(SAS研究所);Shanghai Jiao Tong University(上海交通大学)

Wei Xiao, Xiaolin Huang, Jorge Silva, Saba Emrani, Arin Chaudhuri

摘要:

鲁棒PCA方法通常是批处理算法,需要在处理之前将所有观测加载到内存中。这使得他们处理大数据的效率低下。本文提出了一种有效的在线鲁棒主成分分析方法,即在线移动窗口鲁棒主成分分析(OMWRPCA)。与现有的算法不同,OMWRPCA不仅可以成功地跟踪缓慢变化的子空间,也可以跟踪突变的子空间。通过在算法中嵌入假设检验,OMWRPCA可以检测到底层子空间的变化点。大量的仿真研究表明,OMWRPCA的优越性能相比,其他国家的最先进的方法。我们还将该算法应用于监控视频的实时背景减除。

英文摘要:

Robust PCA methods are typically batch algorithms which requires loading all observations into memory before processing. This makes them inefficient to process big data. In this paper, we develop an efficient online robust principal component methods, namely online moving window robust principal component analysis (OMWRPCA). Unlike existing algorithms, OMWRPCA can successfully track not only slowly changing subspace but also abruptly changed subspace. By embedding hypothesis testing into the algorithm, OMWRPCA can detect change points of the underlying subspaces. Extensive simulation studies demonstrate the superior performance of OMWRPCA compared with other state-of-art approaches. We also apply the algorithm for real-time background subtraction of surveillance video.

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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