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http://dx.doi.org/10.5351/KJAS.2017.30.5.647

A generalized likelihood ratio chart for monitoring type I right-censored Weibull lifetimes  

Han, Sung Won (Department of Applied Statistics, Chung-Ang University)
Lee, Jaeheon (Department of Applied Statistics, Chung-Ang University)
Publication Information
The Korean Journal of Applied Statistics / v.30, no.5, 2017 , pp. 647-663 More about this Journal
Abstract
Weibull distribution is a popular distribution for modeling lifetimes because it reflects the characteristics of failure adequately and it models either increasing or decreasing failure rates simply. It is a standard method of the lifetimes test to wait until all samples failed; however, censoring can occur due to some realistic limitations. In this paper, we propose a generalized likelihood ratio (GLR) chart to monitor changes in the scale parameter for type I right-censored Weibull lifetime data. We also compare the performance of the proposed GLR chart with two CUSUM charts proposed earlier using average run length (ARL). Simulation results show that the Weibull GLR chart is effective to detect a wide range of shift sizes when the shape parameter and sample size are large and the censoring rate is not too high.
Keywords
ARL; generalized likelihood ratio(GLR) chart; type I right-censored data; Weibull distribution;
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Times Cited By KSCI : 1  (Citation Analysis)
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