Jean-Yves Jaffray (1939–2009) was a French mathematician and economist who made influential contributions in the fields of decision theory and mathematical statistics.A. Bouyssou et al., Decision Making Process: Concepts and MethodsM. Cohen, Tribute to Jean-Yves Jaffray He pioneered methods in decision theory such as linear utility theory for belief functions,Jaffray, Jean-Yves (1989). "Linear utility theory for belief functions"P.H. Giang, On Jaffray’s Decision Model for Belief Functions bridging the gap between expected utility and the maximin rule by using subjective probability to encompass belief functions.
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