Talašová, Jana NEFRIT—multicriteria decision making based on fuzzy approach. (English) Zbl 0981.90035 CEJOR, Cent. Eur. J. Oper. Res. 8, No. 4, 297-319 (2000). Summary: NEFRIT is a software system for multicriteria evaluation of alternatives which has been developed by TESCO Systems – Software, Ltd. To a maximum extent, the system utilizes possibilities of fuzzy set theory, including applications of the theory to modelling meanings of linguistic expressions (linguistic variable theory). Fuzzy numbers model expert evaluations of alternatives according to individual criteria, fuzzy values of characteristics used for evaluation, and fuzzy objectives of individual decision criteria.The current version of NEFRIT proceeds from the assumption that evaluation criteria are independent; an overall fuzzy utility is calculated as a weighted average of partial fuzzy utilities.A new part of the system which enables to accept even mutual dependency among criteria has been theoretically worked out. An overall fuzzy utility function is set by a rule base and evaluation of alternatives is based on the principle of approximate reasoning. (A plan for the future is to enforce teaching algorithms based on neural networks for automatic generation of the rule base.)NEFRIT represents a general software product with applications developed for the following fields: for banking (decision making about granting a credit), regional administration (selective procedures) and physical education and sports (selection of talented children and sportsmen). Cited in 1 Document MSC: 90B50 Management decision making, including multiple objectives 90C70 Fuzzy and other nonstochastic uncertainty mathematical programming 03E72 Theory of fuzzy sets, etc. Keywords:multicriteria decision making; additive utlity theory; fuzzy calculus; linguistic variable; rule base; approximate reasoning; fuzzy utility; fuzzy objective; fuzzy utility function Software:Nefrit PDFBibTeX XMLCite \textit{J. Talašová}, CEJOR, Cent. Eur. J. Oper. Res. 8, No. 4, 297--319 (2000; Zbl 0981.90035)