Making Comparison between Fuzzy and Non-Fuzzy MCDM to Calculate Weight Factors of Project Activities

This paper combines a group analytic hierarchy process (GAHP) and technique of order performance by similarity to ideal solution (TOPSIS) in fuzzy or non-fuzzy form to define project activities weight factors. A project with 121 activities is proposed as a case and critical parameters which are affecting the priority of each activity are recognized and weighted by GAHP in its fuzzy or non-fuzzy forms. These weights are subsequently used as the inputs for TOPSIS in its fuzzy or non-fuzzy forms to define the project activities weights. The weights are assigned to the activities and the S-curves of the two new fuzzy and non-fuzzy methods are drawn to compare with the two accepted traditional ones – Bill of quantity (BOQ) and Milestones methods. Finally, analyze of variance method is used for mathematical comparing of the methods. The results are shown that the two new methods are valid and the non-fuzzy one is better than the fuzzy one.