Relating and Comparing Methods for Detecting Changes in Mean

Fearnhead, Paul and Rigaill, Guillem (2020) Relating and Comparing Methods for Detecting Changes in Mean. Stat, 9 (1): e291. ISSN 2049-1573

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In recent years there have been a large number of proposed approaches to detecting changes in mean. A natural question for an analyst is which method is most appropriate for their application. Answering this question is difficult because current empirical studies often give conflicting conclusions. This paper aims to show the similarities and differences between different changepoint methods. We highlight that there are two aspects to estimating changepoints: estimating the number of changes and estimating their location, and that comparisons should separately evaluate these two aspects. We perform an extensive comparison of different methods across a range of simulation scenarios, and provide code and full results for an interested practitioner to extend this comparison to more methods or different scenarios.

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12 May 2020 09:55
Last Modified:
21 Dec 2023 08:20