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Activity Number: 594
Type: Topic Contributed
Date/Time: Thursday, August 7, 2014 : 8:30 AM to 10:20 AM
Sponsor: Quality and Productivity Section
Abstract #313365 View Presentation
Title: Monitoring a Poisson Vector with a Linear Combination of Its Elements
Author(s): Eugenio Epprecht*+ and Francisco Aparisi and Sandra Garcia-Bustos
Companies: PUC-Rio and Universidad Politecnica de Valencia and Escuela Superior Politécnica del Litoral
Keywords: Multivariate SPC ; Poisson ; Genetic algorithms ; EWMA
Abstract:

We propose and analyze a new chart for the multivariate process control of Poisson variables: the Linear Combination of Poissons (LCP) chart. The implementation parameters (coefficients of the linear combination and control limits) of this chart can be obtained running (in Windows) user-friendly software developed by the authors. The program employs genetic algorithms to minimize the out-of-control ARL for a given shift, under the constraint of a desired in-control ARL. The new chart shows very good performance when compared with its competitors. An EWMA version of it has also been developed.


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