Spherical fuzzy soft sets: Theory and aggregation operator with its applications

[1] J. Ahmmad, T. Mahmood, R. Chinram, A. Iampan, Some average aggregation operators based on spherical fuzzy soft sets and their applications in multi-criteria decision making, AIMS Mathematics, 6(7) (2021), 7798-7832.

[2] S. Ashraf, S. Abdullah, Spherical aggregation operators and their application in multiattribute group decision-making, International Journal of Intelligent Systems, 34(3) (2019), 493-523.

[3] S. Ashraf, S. Abdullah, M. Aslam, M. Qiyas, M. A. Kutbi, Spherical fuzzy sets and its representation of spherical fuzzy t-norms and t-conorms, Journal of Intelligent and Fuzzy Systems, 36(6) (2019), 6089-6102.

[4] S. Ashraf, S. Abdullah, T. Mahmood, Spherical fuzzy sets and their applications in multi-attribute decision making problems, Journal of Intelligent and Fuzzy Systems, 36(3) (2019), 2829-2844.

[5] S. Ashraf, S. Abdullah, T. Mahmood, Spherical fuzzy Dombi aggregation operators and their application in group decision-making problems, Journal of Ambient Intelligence and Humanized Computing, 11 (2020), 2731-2749.

[6] K. T. Atanassov, Intuitionistic fuzzy sets, Fuzzy Sets and Systems, 20(1) (2003), 87-96.

[7] A. Aygünoğlu, H. Aygün, Some notes on soft topological spaces, Neural Computing and Applications, 21(1) (2012), 113-119.

[8] K. V. Babitha, S. J. John, Hesitant fuzzy soft sets, Journal of New Results in Science, 2(3) (2013), 98-107.

[9] R. E. Bellman, L. A. Zadeh, Decision-making in a fuzzy environment, Manage Science, 17(4) (1970), Doi:10.1287 /mnsc.17.4.B141.

[10] B. Cuong, Picture fuzzy sets-first results, Journal of Computer Science and Cybernetics, 30(4) (2015), doi: 10.15625/1813-9663/30/4/5032.

[11] N. Çağman, S. Enginoğlu, F. Çıtak, Fuzzy soft set theory and its applications, Iranian Journal of Fuzzy Systems, 8(3) (2011), 137-147.

[12] N. Çağman, S. Karataş, Intuitionistic fuzzy soft set theory and its decision making, Journal of Intelligent and Fuzzy Systems, 24(4) (2013), 829-836.

[13] V. Çetkin, A. Aygünoğlu, H. Aygün, A new approach in handling soft decision making problems, Journal of Nonlinear Science and Applications, 9 (2016), 231-239.

[14] V. Çetkin, E. Güner, H. Aygün, On 2S-metric spaces, Soft Computing, 24(17) (2020), 12731-12742.

[15] J. M. Garibaldi, T. Ozen, Uncertain fuzzy reasoning: A case study in modelling expert decision making, IEEE Transactions on Fuzzy Systems, 15(1) (2007), 16-30.

[16] A. Guleria, R. K. Bajaj, T-spherical fuzzy soft sets and its aggregation operators with application in decision-making, Scientia Iranica, 28(2) (2021), 1014-1029.

[17] E. Güner, H. Aygün, Generalized spherical fuzzy Einstein aggregation operators: Application to multi-criteria group decision-making problems, Conference Proceedings of Science and Technology, 3(2) (2020), 227-235.

[18] Y. Jin, S. Ashraf, S. Abdullah, Spherical fuzzy logarithmic aggregation operators based on entropy and their application indecision support systems, Entropy, 21(7) (2019), 628-664.

[19] F. Kutlu Gündoğdu, C. Kahraman, From 1D to 3D membership: Spherical fuzzy sets, BOS/SOR2018 Conference, Warsaw, Poland, 2019.

[20] F. Kutlu Gündoğdu, C. Kahraman, A novel VIKOR method using spherical fuzzy sets and its application to warehouse site selection, Journal of Intelligent and Fuzzy Systems, 37(1) (2019), 1197-1211.

[21] F. Kutlu Gündoğdu, C. Kahraman, Extension of WASPAS with spherical fuzzy sets, Informatica, 30(2) (2019), 269-292.

[22] F. Kutlu Gündoğdu, C. Kahraman, Spherical fuzzy sets and spherical fuzzy TOPSIS method, Journal of Intelligent and Fuzzy Systems, 36(1) (2019), 337-352.

[23] T. Mahmood, U. Kifayat, Q. Khan, N. Jan, An approach toward decision making and medical diagnosis problems using the concept of spherical fuzzy sets, Neural Computing and Applications, 31 (2018), 7041-7053.

[24] P. K. Maji, R. Biswas, A. R. Roy, Fuzzy soft sets, Journal of Fuzzy Mathematics, 9(3) (2001), 589-602.

[25] P. K. Maji, R. Biswas, A. R. Roy, Soft set theory, Computers Mathematics with Applications, 45 (2003), 555-562.

[26] P. K. Maji, A. R. Roy, An application of soft set in decision making problem, Computers Mathematics with Applications, 44 (2002), 1077-1083.

[27] D. Molodtsov, Soft set theory-first results, Computers Mathematics with Applications, 37 (1999), 19-31.

[28] B. Pazar Varol, H. Aygün, Fuzzy soft topology, Hacettepe Journal of Mathematics and Statistics, 41(3) (2012), 407-419.

[29] X. Peng, Y. Yang, J. Song, Y. Jiang, Pythagorean fuzzy soft set and its application, Computer Engineering, 41 (2015), 224-229.

[30] P. F. A. Perveen, J. J. Sunil, K. Babitha, H. Garg, Spherical fuzzy soft sets and its applications in decision-making problems, Journal of Intelligent and Fuzzy Systems, 37(6) (2019), 8237-8250.

[31] R. Sambuc, Function -flous application a laide au diagnostic en pathologie thyroidienne, Ph.D. Thesis, University of Marseille, France, 1975.

[32] G. Selvachandran, H. Garg, S. G. Quek, Vague entropy measure for complex vague soft sets, Entropy, 20(6) (2018), 403.

[33] F. Smarandache, Neutrosophy: Neutrosophic probability, set and logic: Analytic synthesis and synthetic analysis, American Research Press, 1998.

[34] V. Torra, Hesitant fuzzy sets, International Journal of Intelligent Systems, 25(6) (2010), 529-539.

[35] L. Wang, H. Garg, N. Li, Pythagorean fuzzy interactive Hamacher power aggregation operators for assessment of express service quality with entropy weight, Soft Computing, 25(2) (2021), 973-993.

[36] G. Wei, Picture fuzzy aggregation operators and their application to multiple attribute decision making, Journal of Intelligent and Fuzzy Systems, 33(2) (2017), 713-724.

[37] G. Wei, Picture fuzzy Hamacher aggregation operators and their application to multiple attribute decision making, Fundamenta Informaticae, 157(3) (2018), 271-320.

[38] G. M. Weiss, K. Yoneda, T. Hayajneh, Smartphone and smartwatch-based biometrics using activities of daily living, IEEE Access, 7 (2019), 133190-133202.

[39] Z. S. Xu, Intuitionistic fuzzy aggregation operators, IEEE Transactions on Fuzzy Systems, 15(6) (2007), 1179-1187.

[40] R. R. Yager, On the theory of bags, International Journal of General Systems, 13(1) (1986), 23-37.

[41] R. R. Yager, Pythagorean fuzzy subsets, Proceedings of Joint IFSA World Congress and NAFIPS Annual Meeting, Edmonton, Canada, 2013.

[42] Y. Yang, C. Liang, S. Ji, T. Liu, Adjustable soft discernibility matrix based on picture fuzzy soft sets and its applications in decision making, Journal of Intelligent and Fuzzy Systems, 29(4) (2015), 1711-1722.

[43] L. A. Zadeh, Fuzzy sets, Information and Control, 8 (1965), 338-353.

[44] L. A. Zadeh, The concept of a linguistic variable and its application to approximate reasoning, Information Sciences, 8 (1975), 199-249.