Probabilistic Failure Propagation and Transformation Analysis
SAFECOMP '09 Proceedings of the 28th International Conference on Computer Safety, Reliability, and Security
Architecture-level dependability analysis of a medical decision support system
Proceedings of the 2010 ICSE Workshop on Software Engineering in Health Care
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Probabilistic Risk Assessment is a technique to assessthe probability of failure or success of a mission. Resultsprovided by the risk assessment methodology are used tomake decisions concerning choice of upgrades,scheduling of maintenance, decision to launch, etc.However, current PRA neglects the contribution ofsoftware to the risk of failure of the mission. This paperpresents a framework for "Integrating Software intoPRA", a methodology for systematic integration of thesoftware contribution to risk in system failure analysis. Inparticular, we established a software-related failure modetaxonomy and a three-level PRA sub-model to account forthe impact of software to the classical PRA structure.Application and validation of the taxonomy are discussedin this paper. Future research is also summarized.