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Purpose

The purpose of this paper is to apply Poisson generalized linear model (PGLM) with log link instead of multinomial logistic regression to monitor multinomial logistic profiles in Phase I. Hence, estimating the coefficients becomes easier and more accurate.

Design/methodology/approach

Simulation technique is used to assess the performance of the proposed algorithm using four different control charts for monitoring.

Findings

The proposed algorithm is faster and more accurate than the previous algorithms. Simulation results also indicate that the likelihood ratio test method is able to detect out-of-control parameters more efficiently.

Originality/value

The PGLM with log link has not been used to monitor multinomial profiles in Phase I.

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