Comparison of measures of specificity of Z-numbers

In this paper we analyze informativeness of Z-numbers in terms of measures of specificity. We introduce a human-like concept of specificity measure of Z-number as a generalization of specificity measure of a fuzzy set. According to this concept, a human being assigns weights to measure importance of the components of a Z-number from informativeness viewpoint. An example is considered to compare various specificity measures of Z-number within the idea of the considered concept.