Comparative study of various irrelevancy models proposed for the FCR method.

Abstract

Fuzzy Set Concurrent Rating (FCR) is a psychometric method that aims to improve the problems of common rating scale methods by applying fuzzy set theory. The HLS model is an extended fuzzy logic model that extends fuzzy logic to two dimensions, and is constructed as a direct product space of truth values T and false values F. In this study, we explain the formulas of various consistency indices defined for the FCR method one by one in detail, and visualize the differences so that they can be recognized intuitively by means of an equi- irrelevancy diagram.