The Determination of Rating Points of Objects with Qualitative Characteristics and their Usagein Decision Making Problems

The paper presents the method developed to assess rating points of objects with qualitative indexes. The novelty of the method lies in the fact that the authors use linguistic scales that allow to formalize the values of the indexes with the help of fuzzy sets. As a result it is possible to operate correctly with dissimilar indexes on the unified basis and to get stable final results. The obtained rating points are used in decision making based on fuzzy expert opinions. Keywords—complete orthogonal semantic space, qualitative characteristic, rating points.