arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.00117stat.MEmath.ATstat.OT
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基于拓扑数据分析的在线高维变点检测

Online High-Dimensional Change-Point Detection using Topological Data Analysis

Xiaojun Zheng, Simon Mak, Yao Xie

摘要:

拓扑数据分析(TDA)是一个快速发展的领域,它研究学习复杂数据表示中的底层拓扑结构的方法。TDA方法最近在提取有用的几何结构方面取得了成功,用于广泛的应用,包括蛋白质分类、神经科学和时间序列分析。然而,在许多这样的应用中,人们也对顺序地检测该拓扑结构中的变化感兴趣。我们提出了一种新的方法,称为持久性图的变化点(PD-CP),它解决了这个问题,通过整合广泛使用的持久性图在TDA与非参数变化点检测的最新发展。PD-CP的关键新颖之处在于它利用持久性图上的点的分布来在线检测拓扑变化。我们证明了PD-CP在太阳耀斑监测应用中的有效性。

英文摘要:

Topological Data Analysis (TDA) is a rapidly growing field, which studies methods for learning underlying topological structures present in complex data representations. TDA methods have found recent success in extracting useful geometric structures for a wide range of applications, including protein classification, neuroscience, and time-series analysis. However, in many such applications, one is also interested in sequentially detecting changes in this topological structure. We propose a new method called Persistence Diagram based Change-Point (PD-CP), which tackles this problem by integrating the widely-used persistence diagrams in TDA with recent developments in nonparametric change-point detection. The key novelty in PD-CP is that it leverages the distribution of points on persistence diagrams for online detection of topological changes. We demonstrate the effectiveness of PD-CP in an application to solar flare monitoring.

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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