4FRIEDMAN J H, TUKEY J W. A projection pursuit algorithm for exploratory data analysis[J]. IEEE Trans on Computers, 1974, C-23(9): 881-890.
5YAGER R R. On ordered weighted averaging aggregation operators in multi-criteria decision making[J]. IEEE Trans on Systems Man & Cybernetics, 1993, 18(1): 80-87.
6LEE E S, LI R J. Comparison of fuzzy numbers based on the probability measure of {uzzy events[J]. Computers Mathematics with Applications, 1988, 15(10): 887-896.