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Supplier selection for one-sided processes with unequal sample sizes

Author

Listed:
  • Pearn, W.L.
  • Hung, H.N.
  • Cheng, Ya Ching

Abstract

In this paper, we consider the supplier selection problem which deals with comparing two one-sided processes and selecting the one that has a significantly higher capability value. We present an exact approach to tackle the supplier selection problem. Testing hypotheses with two phases for comparing two processes are considered. Critical values of the tests are calculated to determine the selection decisions. Sample size required for a designated selection power and confidence level is also investigated. The results provide useful information to practitioners. The proposed approach generalizes the existing method by not requiring equal sample sizes for the two processes. An application example on comparing two wavelength division multiplexer (WDM) manufacturing processes is presented to illustrate the practicality of our approach to actual data collected from the factories.

Suggested Citation

  • Pearn, W.L. & Hung, H.N. & Cheng, Ya Ching, 2009. "Supplier selection for one-sided processes with unequal sample sizes," European Journal of Operational Research, Elsevier, vol. 195(2), pages 381-393, June.
    • Handle: RePEc:eee:ejores:v:195:y:2009:i:2:p:381-393
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    References listed on IDEAS

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    1. W L Pearn & Chien-Wei Wu, 2006. "Variables sampling plans with PPM fraction of defectives and process loss consideration," Journal of the Operational Research Society, Palgrave Macmillan;The OR Society, vol. 57(4), pages 450-459, April.
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    Cited by:

    1. Li, Der-Chiang & Lin, Liang-Sian, 2013. "A new approach to assess product lifetime performance for small data sets," European Journal of Operational Research, Elsevier, vol. 230(2), pages 290-298.

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