Fuzzy Reliability Evaluation Using Pythagorean Fuzzy Set Approach Emphasizing Score Function and Accuracy Function

The present study proposes a new technique to determine the reliability of different complex systems using Pythagorean fuzzy set theory. The fuzzy reliability set theory has been applied in many fields such as management, engineering, etc. In this paper we evaluate system reliability in which the reliability of the components of a system are represented by Pythagorean fuzzy element for modeling uncertainty and vagueness in real life situations.The proposed method can model and analyze the fuzzy system reliability in a more flexible and more intelligent manner. This new method also uses the score function and accuracy function for better comparison of different complex systems.