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Computational Complexity of Coherent Systems and the Reliability Polynomial

Published online by Cambridge University Press:  27 July 2009

R.E. Barlow  and
S. Iyer
R.E. Barlow
Affiliation:
Department of Industrial EngineeringUniversity of California, Berkeley, California 94720
S. Iyer
Affiliation:
Indian Statistical Institute Bombay, India
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Abstract

There are three general methods for system reliability evaluation, namely; (1) inclusion–exclusion, (2) sum of disjoint products, and (3) pivoting. Of these, only pivoting can be applied directly to a logic tree or network graph representation without first finding minimal path (or cut) sets. Domination theory provides the basis for selecting optimal pivoting strategies. Simple proofs of domination-theory results for coherent systems are given, based on the reliability polynomial. These results are related to the problem of finding efficient strategies for computing coherent system reliability. The original results for undirected networks are due to Satyanarayana and Chang [5] (cf. [1]). Many of the original set theoretic results are due to Huseby [3]. However, he does not use the reliability polynomial to prove his results.

Type
Research Article
Information
Probability in the Engineering and Informational Sciences , Volume 2 , Issue 4 , October 1988 , pp. 461 - 469
Copyright
Copyright © Cambridge University Press 1988

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References

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5.Satyanarayana, A. & Chang, M.K. (1983). Network reliability and the factoring theorem. Networks 13: 107–120.CrossRefGoogle Scholar