Multivariate Concave and Convex Stochastic Dominance
(2013) Risk Measures and Attitudes — ISBN: [978-1-4471-4925-5], 11-32, published
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- Abstract
- Stochastic dominance permits a partial ordering of alternatives (probability distributions on consequences) based only on partial information about a decision maker’s utility function. Univariate stochastic dominance has been widely studied and applied, with general agreement on classes of utility functions for dominance of different degrees. Extensions to the multivariate case have received less attention and have used different classes of utility functions, some of which require strong assumptions about utility. The multivariate concave stochastic dominance we investigate is a natural extension of the stochastic order typically used in the univariate case and is consistent with a basic preference assumption. The corresponding utility functions are multivariate risk averse, and reversing the preference assumption allows us to investigate stochastic dominance for utility functions that are multivariate risk seeking. We provide insight into these two contrasting forms of stochastic dominance, develop some criteria to compare probability distributions (hence alternatives) via multivariate stochastic dominance, and illustrate how this dominance could be used in practice to identify inferior alternatives. Connections between our approach and dominance using different stochastic orders are discussed.
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Citations
Denuit, M., Eeckhoudt, L., Tsetlin, I., & Winkler, R. (2013). Multivariate Concave and Convex Stochastic Dominance. In Francesca Biagini, Andreas Richter, Harris Schlesinger (ed.), Risk Measures and Attitudes (pp. 11-32). springer-Verlag. https://doi.org/10.1007/978-1-4471-4926-2