Revealed Preference in a Fuzzy Framework

To a fuzzy choice function C we assign the indicators of revealed preference W AF RP (C), SAF RP (C) and the indicators of congruence W F CA(C), SF CA(C). These indicators measure the degree to which the fuzzy choice function C verifies the axioms of revealed preference W AF RP, SAF RP and of congruence W F CA and SF CA, respectively