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- W4386875324 abstract "We consider the problem of sequential change detection, where the goal is to design a scheme for detecting any changes in a parameter or functional $theta$ of the data stream distribution that has small detection delay, but guarantees control on the frequency of false alarms in the absence of changes. In this paper, we describe a simple reduction from sequential change detection to sequential estimation using confidence sequences: we begin a new $(1-alpha)$-confidence sequence at each time step, and proclaim a change when the intersection of all active confidence sequences becomes empty. We prove that the average run length is at least $1/alpha$, resulting in a change detection scheme with minimal structural assumptions~(thus allowing for possibly dependent observations, and nonparametric distribution classes), but strong guarantees. Our approach bears an interesting parallel with the reduction from change detection to sequential testing of Lorden (1971) and the e-detector of Shin et al. (2022)." @default.
- W4386875324 created "2023-09-20" @default.
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- W4386875324 date "2023-09-16" @default.
- W4386875324 modified "2023-09-27" @default.
- W4386875324 title "Reducing sequential change detection to sequential estimation" @default.
- W4386875324 doi "https://doi.org/10.48550/arxiv.2309.09111" @default.
- W4386875324 hasPublicationYear "2023" @default.
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