Abstract
Soft sets (\({S}_{t}\) S) theory provides a general mechanism for handling uncertainty based on the point of view of parameterization tools. The main theme of this manuscript is to extend the notion of Hamacher operators by establishing an interesting connection between two mathematical concepts \({S}_{t}\) S theory and q-rung orthopair fuzzy sets (q-ROFS). To be specific, we develop some new Hamacher operations for q-rung orthopair fuzzy soft sets (q-ROF \({S}_{t}\) S). In light of these operational laws, we further propose some q-rung orthopair fuzzy soft Hamacher aggregation operators, i.e., q-ROF soft Hamacher averaging and q-ROF soft Hamacher geometric aggregation operators, such as q-ROF soft Hamacher weighted averaging (q-ROF \({S}_{t}\) HWA), q-ROF soft Hamacher ordered weighted averaging (q-ROF \({S}_{t}\) HOWA) and q-ROF soft Hamacher hybrid averaging (q-ROF \({S}_{t}\) HHA) operators. Furthermore, based on Hamacher operator laws, we discuss some geometric aggregation operators such as q-ROF soft Hamacher weighted geometric (q-ROF \({S}_{t}\) HWG), q-ROF soft Hamacher ordered weighted geometric (q-ROF \({S}_{t}\) HOWG) and q-ROF soft Hamacher hybrid geometric (q-ROF \({S}_{t}\) HHG) operators. Meanwhile, the important properties of the developed operators are investigated in detail. Then, a technique for multi-criteria decision making and a stepwise algorithm for decision making are demonstrated by utilizing the proposed approach. Finally, a numerical example for the developed approach is presented and a comparative study of the investigated models with some existing methods is performed. The derived results demonstrate that the investigated models are more effective and useful than the existing approaches.
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Hussian, A., Mahmood, T., Ali, M.I. et al. q-Rung orthopair fuzzy soft Hamacher aggregation operators and their applications in multi-criteria decision making. Comp. Appl. Math. 43, 22 (2024). https://doi.org/10.1007/s40314-023-02477-6
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DOI: https://doi.org/10.1007/s40314-023-02477-6
Keywords
- Multi-criteria decision making
- Fuzzy set extensions
- Soft sets
- q-Rung orthopair fuzzy sets
- Aggregation operators
- Hamacher t-norm and t-conorm