Abstract
In a decision-making process, especially in a financial investment decision-making process, one important factor is the investors’ risk appetites. Generally, it is possible for the investors to select different investment schemes when facing the same investment alternatives due to their own risk appetites. Therefore, in this chapter, we investigate the measurement approach of the investor’s risk appetite under the hesitant fuzzy environment and propose an asymmetric sigmoid numerical scale (ASNS) to depict the investor’s risk appetite. Further, based on the hesitant fuzzy preference relations, we develop the asymmetric hesitant fuzzy sigmoid preference relations (AHSPR). Then, a hesitant fuzzy investment decision-making method based on the investor’s risk appetite is given. Lastly, the feasibility and effectiveness of the proposed methods are shown by an illustrative example which is about financial qualitative investment decision making.
Published Version
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