[2] [2] ZADEH L A. Fuzzy sets[J]. Information and Control, 1965, 8(3): 338-353.

[3] [3] ATANASSOV K T. Intuitionistic fuzzy sets[J]. Fuzzy Sets and Systems, 1986, 20(1): 87-96.

[4] [4] ZADEH L A. The concept of a linguistic variable and its application to approximate reasoning-I[J]. Information Sciences, 1975, 8(3): 199-249.

[5] [5] TURKSEN I B. Interval valued fuzzy sets based on normal forms[J]. Fuzzy Sets and Systems, 1986, 20(2): 191-210.

[6] [6] TORRA V, NARUKAWA Y. On hesitant fuzzy sets and decision[C]//2009 IEEE International Conference on Fuzzy Systems. Jeju: IEEE, 2009: 1378-1382.

[7] [7] ZHU B, XU Z S, XIA M M. Dual hesitant fuzzy sets[J]. Journal of Applied Mathematics, 2012, 2012: 879629.

[8] [8] XU Z S, XIA M M. Distance and similarity measures for hesitant fuzzy sets[J]. Information Sciences, 2011, 181(11): 2128-2138.

[9] [9] XU Z S, XIA M M. Hesitant fuzzy entropy and cross-entropy and their use in multiattribute decision-making[J]. International Journal of Intelligent Systems, 2012, 27(9): 799-822.

[10] [10] LI D Q, ZENG W Y, LI J H. New distance and similarity measures on hesitant fuzzy sets and their applications in multiple criteria decision making[J]. Engineering Applications of Artificial Intelligence, 2015, 40: 11-16.

[12] [12] HU J H, ZHANG X L, CHEN X H, et al. Hesitant fuzzy information measures and their applications in multi-criteria decision making[J]. International Journal of Systems Science, 2016, 47(1): 62-76.

[13] [13] LIU X D, WANG Z W, ZHANG S T, et al. Novel correlation coefficient between hesitant fuzzy sets with application to medical diagnosis[J]. Expert Systems with Applications, 2021, 183: 115393.

[14] [14] XU Z S, XIA M M. On distance and correlation measures of hesitant fuzzy information[J]. International Journal of Intelligent Systems, 2011, 26(5): 410-425.

[15] [15] CHAKRABORTY S. TOPSIS and modified TOPSIS: a comparative analysis[J]. Decision Analytics Journal, 2022, 2: 100021.