The influence of parameter estimation on the ARL of Shewhart type charts for time series

The influence of parameter estimation on the ARL of Shewhart type charts for time series
复制标题

参数估计对时间序列休哈特型图 ARL 的影响

DOI:
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发表时间:
2000
期刊:
影响因子:
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通讯作者:
W. Schmid
W. Schmid
中科院分区:
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文献类型:
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作者:
H. Kramer;W. Schmid

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在本文中,我们讨论了当基础过程的参数未知并因此必须进行估计时,休哈特残差图和修改后的休哈特图的行为。我们重点关注方差的估计。对于 AR 模型,我们还考虑 AR 系数的估计。将具有估计参数的控制图的平均游程长度 (ARL) 与已知参数方案的 ARL 以及自变量的 ARL 进行比较。此外,我们还就休哈特控制方案中估计量的选择提出了建议。
In this paper we discuss the behavior of the Shewhart residual chart and the modified Shewhart chart if the parameters of the underlying process are unknown and thus have to be estimated. We focus on the estimation of the variance. For AR models we also consider the estimation of the AR coefficients. The average run length (ARL) of the control chart with estimated parameters is compared with the ARL of the scheme for known parameters and with the ARL for independent variables. Additionally, we give recommendations on the choice of the estimators in the context of Shewhart control schemes.