The OWA-VIKOR method for multiple attributive group decision making in 2-tuple linguistic setting

In order to process the assessment information more exactly and make the decision result more understandable in linguistic setting, a hybrid approach integrating OWA aggregation into VIKOR for multiple attributive group decision making in 2-tuple linguistic setting is proposed. In the method, the OWA is used to aggregate the linguistic assessment information. According to the ideas of VIKOR, the positive ideal solution and negative ideal solution are got. The optimal alternative(s) is determined by the criteria that are group utility, individual regret and advantage rate linguistically. The method has exact characteristics in linguistic information processing and the result is accepted more readily. Finally, a numerical example is used to illustrate the use of the proposed method. The result shows the approach is simple, effective and easy to calculate.