Document Type : Scientific - Research

Authors

• Hojjat Mian abadi ¹
• Abbas Afshar ²

¹ M.S. Iran University of Science and Technology, Faculty of Civil Engineering

² Professor , Iran University of Science and Technology, Faculty of Civil Engineering

Abstract

In real word group decision making problem, decision makers (DMs) have different knowledge, proficiency and experiences and therefore the importance of each expert against an attribute may not be equal. In many studies this difference of knowledge and experiences (relative weight) of each expert has not been considered and equal weight has been assigned to each expert. Obviously, it is inconsequential and creates imprecise and inaccurate solutions. In this paper, a new method and its application have been developed to evaluate relative weights of DMs in the problem of selecting PhD students. The method integrates subjective preferences of group manager and opinions of DMs about themselves simultaneously to assess the relative weights of DMs. By using this method in group decision making problems, decision problems close in reality and final solution is selected more accurately. Application of this method is also distinguished in hybrid weighted averaging (HWA) operator.

Keywords

• Fuzzy Group Decision Making
• decision maker's relative weight
• HWA aggregation operator
• selecting PhD students