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Path-based calculation of MTTFF, MTTFR, and asymptotic unavailability with the stochastic process algebra tool CASPAâ€

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  • J Schuster
  • M Siegle

Abstract

CASPA is a stochastic process algebra tool for performance and dependability modelling, analysis, and verification. It is based entirely on the symbolic data structure of the multi-terminal binary decision diagram (MTBDD) which enables the tool to handle models with very large state space. This paper describes an extension of CASPA’s solving engine for path-based approximation of the mean time to first failure, the mean time to first recovery, and asymptotic unavailability by MTBDD algorithms. A non-trivial case study illustrates the use of path-based analysis and comparisons between the path-based unavailability calculations and results obtained from standard Markovian analysis are presented.

Suggested Citation

  • J Schuster & M Siegle, 2011. "Path-based calculation of MTTFF, MTTFR, and asymptotic unavailability with the stochastic process algebra tool CASPAâ€," Journal of Risk and Reliability, , vol. 225(4), pages 399-406, December.
    • Handle: RePEc:sae:risrel:v:225:y:2011:i:4:p:399-406
    DOI: 10.1177/1748006X11392286
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