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arXiv · 2401.11789

Stein EWMA Control Charts for Count Processes

Christian H. Weiß
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Abstract

The monitoring of serially independent or autocorrelated count processes is considered, having a Poisson or (negative) binomial marginal distribution under in-control conditions. Utilizing the corresponding Stein identities, exponentially weighted moving-average (EWMA) control charts are constructed, which can be flexibly adapted to uncover zero inflation, over- or underdispersion. The proposed Stein EWMA charts' performance is investigated by simulations, and their usefulness is demonstrated by a real-world data example from health surveillance.

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Christian H. Weiß. 2024-01-22. Stein EWMA Control Charts for Count Processes. https://arxiv.org/abs/2401.11789

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