Contractors’ Self-Qualification Using Fuzzy Approach

After selection of contractor in a bid, the first question for unselected contractors is the reason of their loss. This helps them to improve their qualification and increase their chance for satisfaction in future. Criteria that are important in contractor qualification are contractor organization, financial consideration, management resources, past experiences, and past performance, among others. As contractor qualification is a multi-objective procedure, including inexact, vague and qualitative criteria, fuzzy approach seems to be appropriate for judgement. In this paper, utilizing fuzzy set theory, criteria that are important for bidders are ranked. According to the results, Management resources is the most and Contractors' organization is the least important criterion for bidders. This ranking, helps contractors to find the easiest way to improve their qualifications.