Subspace Change-Point Detection via Low-Rank Matrix Factorisation
基于低秩矩阵分解的子空间变点检测AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确分析多变量时间序列,并检测其底层子空间的多个变点,因此对应时间序列与结构变化这两个方法方向。
基于低秩矩阵分解的子空间变点检测AI 解读 ↓
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Multivariate time series can often have a large number of dimensions, whether it is due to the vast amount of collected features or due to how the data sources are processed. Frequently, the main structure of the high-dimensional time series can be well represented by a lower dimensional subspace. As vast quantities of data are being collected over long periods of time, it is reasonable to assume that the underlying subspace structure would change over time. In this work, we propose a change-point detection method based on low-rank matrix factorisation that can detect multiple changes in the underlying subspace of a multivariate time series. Experimental results on both synthetic and real data sets demonstrate the effectiveness of our approach and its advantages against various state-of-the-art methods.
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