In this paper we fully characterize an individual's choice behaviour according to three different so-called external references. The first system which we describe axiomatically is standard utility maximization or preference optimization. The second approach characterizes the choice of the...

In decision-making involving multiple criteria or attributes, the attributes are often divided into core and non-core attributes. A dominance principle is formulated in terms of core attributes, and this principle is applied whenever it is applicable. If, however, the dominance principle defined...