A new similarity measure between type-۲ fuzzy numbers and fuzzy risk analysis

In this paper, we present a revised similarity measure based onChen-and-Chen's similarity measure for fuzzy risk analysis. The revisedsimilarity measure uses the corrected formulae to calculate the centre ofgravity points, therefore it is more  effective than the Chen-and-Chen'smethod. The revised similarity measure can overcome the drawbacks of theexisting methods. We have also proposed a new similarity measure between type-۲fuzzy numbers and a method for handling fuzzy risk analysis problem.

کلیدواژه ها:

Fuzzy numbers ، Similarity measure ، Fuzzy risk analysis ، Interval valued fuzzy number ، Type-۲ fuzzy number