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A cost-effective approach to testing

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1 Author(s)
Sherer, S.A. ; Coll. of Bus. & Econ., Lehigh Univ., Bethlehem, PA, USA

A method for assessing the differential risk of failure among a system's modules is proposed. The procedure has three components: external-risk assessment, module exposure, and module-failure likelihood. External-risk assessment is a consideration of the system's environment, almost independent of the software's details. To estimate module exposure, the model relates individual modules and their potential faults to the external-failure modes and their economic consequences by reverse-engineering the specifications and analyzing each module's expected use. To estimate failure likelihood, the method uses a reliability model. The method constitutes theoretical foundation for the cost-effective development of software that attempts to reduce the risk of failure. Managers can use the failure-risk estimates to better determine how much testing effort can be economically justified.<>

Published in:

Software, IEEE  (Volume:8 ,  Issue: 2 )

Date of Publication:

March 1991

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