The determination of rating points of objects and groups of objects with qualitative characteristics

The paper presents three methods developed to assess rating points of objects and groups of objects with qualitative characteristics. The first method allows to transform the elements of a verbal (order-type) scale into fuzzy numbers instead of traditional scores. The membership functions of these numbers depend on results of qualitative characteristic assessment for this group of objects. So we can make a linguistic scale that can be adjusted for a specific group of objects. The second and third methods allow to obtain rating points for objects and groups of objects with qualitative characteristics based on these linguistic scales.