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Optimizing VVT strategies: a decomposition approach

Author

Listed:
  • M Barad

    (Tel Aviv University)

  • A Engel

    (Israel Aircraft Industries)

Abstract

Verification, validation and testing (VVT) of large systems is an important but complex process. The decisions involved have to consider on one hand the controllable variables associated with investments in appraisal and prevention activities and on the other hand the outcomes of these decisions that are associated with risk impacts and systems' failures. Typically, quantitative models of such large systems use simulation to generate distributions of possible costs and risk outcomes. Here, by assuming independence of risk impacts, we decompose the decision process into separate decisions for each VVT activity and supercede the simulation technique by simple analytical models. We explore various optimization objectives of VVT strategies such as minimum total expected cost, minimum uncertainty as well as a generalized optimization objective expressing Taguchi's expected loss function and provide explicit solutions. A numerical example based on simplified data of a case study is used to demonstrate the proposed VVT optimization procedure.

Suggested Citation

  • M Barad & A Engel, 2006. "Optimizing VVT strategies: a decomposition approach," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 57(8), pages 965-974, August.
    • Handle: RePEc:pal:jorsoc:v:57:y:2006:i:8:d:10.1057_palgrave.jors.2602077
    DOI: 10.1057/palgrave.jors.2602077
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    References listed on IDEAS

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    Cited by:

    1. Avner Engel & Shalom Shachar, 2006. "Measuring and optimizing systems' quality costs and project duration," Systems Engineering, John Wiley & Sons, vol. 9(3), pages 259-280, September.
    2. Avner Engel & Tyson R. Browning, 2008. "Designing systems for adaptability by means of architecture options," Systems Engineering, John Wiley & Sons, vol. 11(2), pages 125-146, June.

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