are also observed). A first, general representation evaluates such a pair by a maxmin cri-
terion applied to a suitably selected subset of P. Under additional assumption, an elegant
representation is obtained for finite state spaces, in which (P, f ) is evaluated according
to a weighted average of the minimum expected utility over P and the expected utility
with respect to the Steiner point of P (a construct which generalizes the notion of center
of gravity). Wang (2003) instead considers preferences over tuples (P, p, f ), where P is
a set of probability distributions, p is a reference prior (a distinguished ...
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