Decision analysis using rough sets. (English) Zbl 0854.90088

Pawlak, Zdzislaw; Słowinski, Roman

Int. Trans. Oper. Res. 1, No. 1, 107-114 (1994).

Summary: We show that the rough set theory is a useful tool for analysis of decision situations, in particular multicriteria sorting problems. It deals with vagueness in the representation of a decision situation, caused by granularity of the representation. The rough set approach produces a set of decision rules involving a reduced number of most important criteria. It does not correct vagueness manifested in the representation; instead, the rules produced are categorized into deterministic and non-deterministic. The set of decision rules explains the decision situation and may be used to support new decisions. An example illustrates the rough set analysis of a multicriteria sorting problem.

MSC:

90B50	Management decision making, including multiple objectives
03E72	Theory of fuzzy sets, etc.

Keywords:

decision analysis; vagueness; rough set theory; multicriteria sorting