Fuzzy Reliability Measures of Fuzzy Probabilistic Semi-Markov Model

Software systems are becoming increasingly more complex and testing it to a reliable system requires a great deal of effort. Stochastically testing promises a solution to this increased testing burden and gives the opportunity to analyze reliability, mean time to failure etc. Today there is hundreds of reliability models with more models developed every year. Still, there exist no models that can be applied for the cases that are uncertain /imprecise. In this paper we present the feasibility of applying fuzzy technique testing based on fuzzy probabilistic semi-Markov chain usage model to web based application and explore the fuzzy reliability for the systems that are based on uncertainty/vagueness. The definitions and results for the fuzzy model are provided by means of the fuzzy probabilities and are modeled by triangular fuzzy numbers.