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A critical assessment of two-stage group screening through industrial experimentation

A critical assessment of two-stage group screening through industrial experimentation
A critical assessment of two-stage group screening through industrial experimentation
Screening is the process of sifting through a set of factors through experimentation to determine the few important factors that have a substantial effect on a response. When the set of factors is large and interactions are anticipated, screening methods using single fractional factorial designs may require too many observations to be feasible. The methodology of two-stage group screening has been suggested as an alternative. This article gives the first description of practical aspects involved in running a two-stage group screening experiment for investigating interactions. Issues involved in the design and analysis of such an experiment are discussed in the context of a study run at Jaguar Cars on cold start optimization. The analysis of this experiment provides insight into how group screening works in practice and how the factorial effects of the individual factors relate to those of the grouped factors. Elicitation of information from subject specialists, choice of factor groups, and selection of designs for two-stage group screening are discussed. Through the analysis of the experimental data, it is shown that the process of group screening can provide an efficient method of detecting interactions among large numbers of factors.
active factor, experiment, fractional factorial, grouping, interaction, screening, splitplot design
0040-1706
15-25
Vine, A.E.
0b9da504-9342-4aa1-ae7f-2c6333629804
Lewis, S.M.
a69a3245-8c19-41c6-bf46-0b3b02d83cb8
Dean, A.M.
9c90540a-cdf4-44ce-9d34-6b7b495a1ea3
Brunson, D.
a4279438-93f1-464a-be88-3b27ba043e58
Vine, A.E.
0b9da504-9342-4aa1-ae7f-2c6333629804
Lewis, S.M.
a69a3245-8c19-41c6-bf46-0b3b02d83cb8
Dean, A.M.
9c90540a-cdf4-44ce-9d34-6b7b495a1ea3
Brunson, D.
a4279438-93f1-464a-be88-3b27ba043e58

Vine, A.E., Lewis, S.M., Dean, A.M. and Brunson, D. (2008) A critical assessment of two-stage group screening through industrial experimentation. Technometrics, 50 (1), 15-25. (doi:10.1198/004017007000000489).

Record type: Article

Abstract

Screening is the process of sifting through a set of factors through experimentation to determine the few important factors that have a substantial effect on a response. When the set of factors is large and interactions are anticipated, screening methods using single fractional factorial designs may require too many observations to be feasible. The methodology of two-stage group screening has been suggested as an alternative. This article gives the first description of practical aspects involved in running a two-stage group screening experiment for investigating interactions. Issues involved in the design and analysis of such an experiment are discussed in the context of a study run at Jaguar Cars on cold start optimization. The analysis of this experiment provides insight into how group screening works in practice and how the factorial effects of the individual factors relate to those of the grouped factors. Elicitation of information from subject specialists, choice of factor groups, and selection of designs for two-stage group screening are discussed. Through the analysis of the experimental data, it is shown that the process of group screening can provide an efficient method of detecting interactions among large numbers of factors.

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More information

Published date: February 2008
Keywords: active factor, experiment, fractional factorial, grouping, interaction, screening, splitplot design
Organisations: Statistics, Southampton Statistical Research Inst.

Identifiers

Local EPrints ID: 54762
URI: http://eprints.soton.ac.uk/id/eprint/54762
ISSN: 0040-1706
PURE UUID: 86facfae-8cf7-4a3d-8f97-8963053188d0

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Date deposited: 04 Aug 2008
Last modified: 15 Mar 2024 10:50

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Contributors

Author: A.E. Vine
Author: S.M. Lewis
Author: A.M. Dean
Author: D. Brunson

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