Capability indices, such as, Cp, Cpk, Cpm and Cpmk , are important quantities to provide a measure of process potentiality and performance. In this paper we consider the problem of estimations of indices Cpm (µ T) and Cpmk (µ = m) under Bayesian framework. Several priors such as non-informative, conjugate prior and Weibull hazard function have been considered. Some estimates of hyper parameters are also studied. Some Bayesian estimators are derived and lower bounds of the credible intervals under some conditions are also given.
工業工程學刊=Journal of the Chinese Institute of Industrial Engineers 20(1)，頁49-61