Applicability of simple additive weighting method with grey relations and comparison with other grey theory techniques

Abstract

Multi-attribute analysis is useful in many economical, managerial or constructional problems. The accuracy of performance measures in COPRAS method is usually assumed to be accurate. However, there is usually an uncertainty involved in all multi-attribute model inputs. We demonstrate how simulation can be used to re ect fuzzy inputs, allowing more complete interpretation. A case study is used to illustrate the concept of general contractor choice based on multiple attributes of ef ciency with fuzzy inputs applying COPRAS-G. We conclude that this method is appropriate to use.