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Optimal Parallel Inspection for Finding the First Nonconforming Unit in a Batch---An Information Theoretic Approach

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Author Info

  • Yale T. Herer

    ()
    (Department of Industrial Engineering, Tel Aviv University, Ramat Aviv 69978, Israel)

  • Tzvi Raz

    ()
    (Faculty of Management, Tel Aviv University, Ramat Aviv 69978, Israel)

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    Abstract

    We consider the case of a batch of discrete units produced by a process subject to failures under a known probability distribution function, and apply information theory to the problem of finding the first nonconforming unit in the batch at minimum cost. Two distinct but related aspects of this problem were treated: determining which units should be inspected, and determining how many units should be sent for inspection at the same time. The solution is based on the principles of inspecting the product units that maximize the reduction in the uncertainty regarding the location of the first nonconforming unit, and of minimizing the cost per unit of uncertainty reduced. These principles are formalized by means of a series of theorems leading to an easy-to-implement algorithm for managing parallel inspection. This approach is successfully compared with the optimal solution obtained with dynamic programming and with other heuristics.

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    File URL: http://dx.doi.org/10.1287/mnsc.46.6.845.11933
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    Bibliographic Info

    Article provided by INFORMS in its journal Management Science.

    Volume (Year): 46 (2000)
    Issue (Month): 6 (June)
    Pages: 845-857

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    Handle: RePEc:inm:ormnsc:v:46:y:2000:i:6:p:845-857

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    Related research

    Keywords: inspection planning; information theory;

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    Cited by:
    1. Bendavid, Illana & Herer, Yale T., 2009. "Economic optimization of off-line inspection in a process that also produces non-conforming units when in control and conforming units when out of control," European Journal of Operational Research, Elsevier, vol. 195(1), pages 139-155, May.

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