This paper discusses a decision maker’s attitude regarding risks, for example risk neutral, risk averse and risk loving in microeconomics by the convexity and concavity of utility functions. Weighted quasi-arithmetic means on two-dimensional regions are introduced, and some conditions on utility functions are discussed to characterize the decision maker’s attitude. Risk premiums on two-dimensional regions are given and demonstrated. Some approaches to construct two-dimensional utilities from one-dimensional ones are given, and a lot of examples of weighted quasi-arithmetic means are shown.
CITATION STYLE
Yoshida, Y. (2015). Weighted quasi-arithmetic mean on two-dimensional regions and their applications. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 9321, pp. 42–53). Springer Verlag. https://doi.org/10.1007/978-3-319-23240-9_4
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