Fuzzy membership functions of procurement selection criteria

Many researchers have advocated the development and application of a systematic approach to the selection of procurement processes. Different procurement selection models aimed at improving the decision making process have been proposed. These models generally fail to address the fuzziness of selection criteria used for procurement selection. The aim of this paper is to establish the fuzzy membership function of procurement selection criteria through an empirical study conducted in Australia. Seven procurement selection criteria were considered fuzzy in nature. They are speed, complexity, flexibility, responsibility, quality level, risk allocation, and price competition. The fuzzy membership functions for each of these seven fuzzy procurement selection criteria were derived through a modified horizontal approach.