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Publication Detail
Sensitivity Analysis for a Scenario-Based Reliability Prediction Model
  • Publication Type:
  • Authors:
    Rodrigues G, Rosenblum D, Uchitel S
  • Publisher:
    ACM Press
  • Publication date:
  • Place of publication:
  • Pagination:
    73, 77
  • Book title:
    Proceedings ICSE 2005 Workshop on Architecting Dependable Systems
  • Series editors:
    Lemos R,Romanovsky A
  • Addresses:
    St. Louis, MO, USA
  • Notes:
    Imported via OAI, 7:29:01 5th Jul 2005
As a popular means for capturing behavioural requirements, scenariosshow how components interact to provide system-level functionality.If component reliability information is available, scenarioscan be used to perform early system reliability assessment. Inprevious work we presented an automated approach for predictingsoftware system reliability that extends a scenario specificationto model (1) the probability of component failure, and (2) scenariotransition probabilities. Probabilistic behaviour models ofthe system are then synthesized from the extended scenario specification.From the system behaviour model, reliability predictioncan be computed. This paper complements our previous work andpresents a sensitivity analysis that supports reasoning about howcomponent reliability and usage profiles impact on the overall systemreliability. For this purpose, we present how the system reliabilityvaries as a function of the components reliabilities and thescenario transition probabilities. Taking into account the concurrentnature of component-based software systems, we also analysethe effect of implied scenarios prevention into the sensitivity analysisof our reliability prediction technique.
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