Abstract #301540

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JSM 2002 Abstract #301540
Activity Number: 385
Type: Contributed
Date/Time: Thursday, August 15, 2002 : 8:30 AM to 10:20 AM
Sponsor: Section on Physical & Engineering Sciences*
Abstract - #301540
Title: On The Use of Principal Components Analysis in the Assessment of Process Capability Indices
Author(s): Evdokia Xekalaki*+ and Michael Perakis
Affiliation(s): Athens University of Economics & Business and Athens University of Economics & Business
Address: 76, Patision St.,, Athens, International, 104 34, Greece
Keywords: process capability indices ; multivariate processes ; principal components analysis
Abstract:

The use of principal components analysis in measuring the capability of a multivariate process was first considered by Wang and Chen (1998,1999). In this paper, extending their initial idea, some indices are proposed that can be used in situations where the specification limits of the multivariate process are unilateral and of the same type (i.e., all of them are either lower limits or upper limits). Moreover, some new indices are defined that assign unequal weights to the univariate indices that correspond to the individual principal components. These weights are based on the portion of the variance explained by the relative principal components.

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