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Many algorithms for computing the reliability of linear or circular consecutive-k-out-of-n:F systems appeared in this Transactions. The best complexity estimate obtained for solving this problem is O(k3 log(n/k)) operations in the case of i.i.d. components. Using fast algorithms for computing a selected term of a linear recurrence with constant coefficients, we provide an algorithm having arithmetic complexity O(k log (k) log(log(k)) log(n)+komega) where 2<omega< 3 is the exponent of linear algebra. This algorithm holds generally for linear, and circular consecutive-k-out-of-n:F systems with independent but not necessarily identical components.
Date of Publication: March 2008