PMID- 37362734 OWN - NLM STAT- Publisher LR - 20230928 IS - 1380-7501 (Print) IS - 1573-7721 (Electronic) IS - 1380-7501 (Linking) DP - 2023 Apr 12 TI - Einstein exponential operation laws of spherical fuzzy sets and aggregation operators in decision making. PG - 1-24 LID - 10.1007/s11042-023-14532-9 [doi] AB - The spherical fuzzy set (SFS) model is one of the newly developed extensions of fuzzy sets (FS) for the purpose of dealing with uncertainty or vagueness in decision making. The aim of this paper is to define new exponential and Einstein exponential operational laws for spherical fuzzy sets and their corresponding aggregation operators. We introduce the operational laws for exponential and Einstein exponential SFSs in which the base values are crisp numbers and the exponents (weights) are spherical fuzzy numbers. Some of the properties and characteristics of the proposed operations are then discussed. Based on these operational laws, some new aggregation operators for the SFS model, namely Spherical Fuzzy Weighted Exponential Averaging (SFWEA) and Spherical Fuzzy Einstein Weighted Exponential Averaging (SFEWEA) operators are introduced. Finally, a decision-making algorithm based on these newly introduced aggregation operators is proposed and applied to a multi-criteria decision making (MCDM) problem related to ranking different types of psychotherapy. CI - (c) The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023, Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. FAU - Ajay, D AU - Ajay D AD - Department of Mathematics, Sacred Heart College, Tamilnadu, India. GRID: grid.473479.a. ISNI: 0000 0004 1769 0984 FAU - Selvachandran, Ganeshsree AU - Selvachandran G AD - Institute of Actuarial Science and Data Analytics, UCSI University, Jalan Menara Gading, 56000 Cheras, Kuala Lumpur Malaysia. GRID: grid.444472.5. ISNI: 0000 0004 1756 3061 AD - Symbiosis Institute of Technology Symbiosis International University, Pune, 412115 India. GRID: grid.444681.b. ISNI: 0000 0004 0503 4808 FAU - Aldring, J AU - Aldring J AD - Department of Mathematics, Sacred Heart College, Tamilnadu, India. GRID: grid.473479.a. ISNI: 0000 0004 1769 0984 AD - Panimalar Engineering College, Department of Mathematics, Chennai, 600 123 Tamil Nadu India. GRID: grid.252262.3. ISNI: 0000 0001 0613 6919 FAU - Thong, Pham Huy AU - Thong PH AD - VNU Information Technology Institute, Vietnam National University, Hanoi, Vietnam. GRID: grid.267852.c. ISNI: 0000 0004 0637 2083 FAU - Son, Le Hoang AU - Son LH AD - VNU Information Technology Institute, Vietnam National University, Hanoi, Vietnam. GRID: grid.267852.c. ISNI: 0000 0004 0637 2083 FAU - Cuong, Bui Cong AU - Cuong BC AD - Institute of Mathematics, Vietnam Academy of Science and Technology, Hanoi, Vietnam. GRID: grid.472707.1. ISNI: 0000 0001 2203 4787 LA - eng PT - Journal Article DEP - 20230412 PL - United States TA - Multimed Tools Appl JT - Multimedia tools and applications JID - 101555932 PMC - PMC10090759 OTO - NOTNLM OT - Aggregate operator OT - Decision making OT - Einstein exponential operational laws OT - Exponential operational laws OT - Spherical fuzzy set EDAT- 2023/06/26 19:07 MHDA- 2023/06/26 19:07 PMCR- 2023/04/12 CRDT- 2023/06/26 13:08 PHST- 2021/03/24 00:00 [received] PHST- 2021/05/21 00:00 [revised] PHST- 2023/01/31 00:00 [accepted] PHST- 2023/06/26 19:07 [pubmed] PHST- 2023/06/26 19:07 [medline] PHST- 2023/06/26 13:08 [entrez] PHST- 2023/04/12 00:00 [pmc-release] AID - 14532 [pii] AID - 10.1007/s11042-023-14532-9 [doi] PST - aheadofprint SO - Multimed Tools Appl. 2023 Apr 12:1-24. doi: 10.1007/s11042-023-14532-9.