A Soft ware Cost Model with Reliability Constraint under Two Operational Scenarios

In this paper we extend the reliability constrained cost minimization (RCCM) model by Helander et al. (1998) from two view points: time non-homogeneous property on software failure-occurrence process and gap between testing and operational phases of software product. The expected cost minimization with reliability constraint is formulated as a non-linear minimization problem under alternative scenario on the operation. We develop an effective optimization algorithm based on the Kuhn-Tucker conditions and provide an illustrative example on how to design a component-based software.

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