Abstract: Aiming at the limitations of intuitionistic fuzzy member in ranking, we proposed an intuitionistic fuzzy soft decision making method by improving the classical score function of intuitionistic fuzzy numbers, and using the expected score functions and its induced partial orders. An illustrative example shows that the proposed method generalizes the complementary operation of intuitionistic fuzzy soft sets, and can effectively solve relevant decision making problems.

Key words: intuitionistic fuzzy number, soft set, intuitionistic , fuzzy soft set, score function, decision analysis