ALTERNATYVŲ VERTINIMO BŪDAI TOPSIS METODU, ESANT NEAPIBRĖŽTUMUI.

The paper analyses the problem of multiple attribute decision-making (MADM) under fuzzy environment. In some cases the crisp value is inadequate to model real-life situations. For this reason some fuzzy MADM methods have been developed. The extended TOPSIS (Technique for the Order Preference by Similarity to Ideal Solution) to fuzzy environment is presented in the current paper. Weights and ratings of each criterion are described in triangular fuzzy numbers. The relative closeness to the ideal solution of each alternative is calculated applying different approaches that were presented in different scientific papers. A computational experiment is presented to compare the results of a multiple attribute analysis that uses three modifications of fuzzy TOPSIS method in a particular situation. [ABSTRACT FROM AUTHOR]