STUDY ON MEASUREMENT RELIABILITY BASED ON LIU ESTIMATOR

摘要

In this paper, we introduce the Liu estimator in the measurement process as an alternative method to the ordinary least squares estimator. To compare the Liu estimator and the ordinary least squares estimator under the reliability criterion, a simulation study is conducted. Simulation study results show that Liu estimator is an effective method to replace OLS estimator in process measurement. When the Liu parameter choose in a reasonable range, Liu estimator superior to ordinary least squares estimator in terms of reliability.