Gajdos, Thibault; Hayashi, Takashi; Tallon, Jean-Marc; … - HAL - 2008
information. Information is assumed to take the form of a probability-possibility set, that is, a set $P$ of probability measures …, $\varphi$, which links the probability-possibility set, describing the available information, to the set of revealed priors …. The mapping $\varphi$ is shown to represent the decision maker's attitude to imprecise information: under our axioms, the …