Performance evaluation of computer system with failure based on fuzzy set theory

The purpose of this paper is to present the performance evaluation of computer system with failure based on fuzzy set theory. The performance evaluation of on-line computer system with failure is fuzzified. The authors represent the performance measures of the on-line computer system by modeling occurrences of failed computer equipment units based on fuzzy set theory. They are forced to employ subjective possibilities or probabilities when there is no information about a model or some parameters of a model are vague. The information may be obtained subjectively from experts or very little data. The authors present the fuzzification model and the performance evaluation of on-line comptuer system with failure based on fuzzy set theory. Also, it is shown that this performnce evaluation is more flexible and realistic than crisp performance evaluation of conventional method in some numerical examples.