  In this paper we consider a multicriteria aggregation model where local
utility functions of different sorts are aggregated using Sugeno integrals, and
which we refer to as Sugeno utility functions. We propose a general approach to
study such functions via the notion of pseudo-Sugeno integral (or,
equivalently, pseudo-polynomial function), which naturally generalizes that of
Sugeno integral, and provide several axiomatizations for this class of
functions. Moreover, we address and solve the problem of factorizing a Sugeno
utility function as a composition of a Sugeno integral with local utility
functions, if such a factorization exists.
