Amelioration operators of fuzzy number intuitionistic fuzzy geometric and their application to Multi-criteria decision-making

Weighted score function and weighted accuracy function of Interval-valued intuitionistic fuzzy sets are defined in paper. The weighted problems which can not be deal with score function and accuracy function are solved so that the application of the decision-making based on score function and accuracy function of interval-valued intuitionistic fuzzy sets is more extensive and more practical. Basing on them, the methods of solving multi-criteria decision-making problems are proposed, in which the attribute weights are completely known and the attribute values are interval-valued intuitionistic fuzzy numbers. The real example is proved that the method is a new method for solving multi-criteria decision-making.