Semi-heuristic target-based fuzzy decision procedures: Towards a new interval justification

To more adequately describe human decision making, V.-N. Huynh, Y. Nakamori, and others proposed a special semi-heuristic target-based fuzzy decision procedure. A usual justification for this procedure is based on the selection of the simplest possible membership functions and “and”- and “or”-operations; if we use more complex membership functions and “and”- and “or”-operations, we get different results. Interestingly, in practical applications, the procedure based on the simplest choices most adequately describes human preferences. It is therefore desirable to come up with a justification that explains this empirical fact. Such a justification is proposed in this paper.