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