Purpose:The purpose of this paper is to propose a consensus method for multi-attribute group decisionmaking(MAGDM)problems based on preference-approval structure and regret theory,which can improve the efficiency of d...Purpose:The purpose of this paper is to propose a consensus method for multi-attribute group decisionmaking(MAGDM)problems based on preference-approval structure and regret theory,which can improve the efficiency of decision-making and promote the consensus level among individuals.Design/methodology/approach:First,a new method to obtain the reference points based on regret theory and expert weighting method is proposed.Second,a consensus reaching method based on preference-approval structure is proposed.Then,an adjustment mechanism to further improve the consensus level between individuals is designed.Finally,an example of the assessment of elderly care institutions is used to illustrate the feasibility and effectiveness of the proposed method.Findings:The feasibility and validity of the proposed method are verified by comparing with the advanced two-stage minimum adjustment method.The compared results show that the proposed method is more consistent with the actual situation.Research limitations/implications:This paper presents a consensus reaching method for MAGDM based on preference-approval structure,which considers the avoidance behaviors of individuals and reference points.Decision makers(DMs)can use this approach to rank and categorize alternatives while further increasing the level of consensus among them.This can further help determine the optimal alternative more efficiently.Originality/value:A new MAGDM problem based on the combination of regret theory and individual reference points is proposed.Besides,a new method of obtaining experts’weights and a consensus reaching method for MAGDM based on preference-approval structure are designed.展开更多
基金supported by the Jiangsu Social Science Research Fund of China(No.21SHB003).
文摘Purpose:The purpose of this paper is to propose a consensus method for multi-attribute group decisionmaking(MAGDM)problems based on preference-approval structure and regret theory,which can improve the efficiency of decision-making and promote the consensus level among individuals.Design/methodology/approach:First,a new method to obtain the reference points based on regret theory and expert weighting method is proposed.Second,a consensus reaching method based on preference-approval structure is proposed.Then,an adjustment mechanism to further improve the consensus level between individuals is designed.Finally,an example of the assessment of elderly care institutions is used to illustrate the feasibility and effectiveness of the proposed method.Findings:The feasibility and validity of the proposed method are verified by comparing with the advanced two-stage minimum adjustment method.The compared results show that the proposed method is more consistent with the actual situation.Research limitations/implications:This paper presents a consensus reaching method for MAGDM based on preference-approval structure,which considers the avoidance behaviors of individuals and reference points.Decision makers(DMs)can use this approach to rank and categorize alternatives while further increasing the level of consensus among them.This can further help determine the optimal alternative more efficiently.Originality/value:A new MAGDM problem based on the combination of regret theory and individual reference points is proposed.Besides,a new method of obtaining experts’weights and a consensus reaching method for MAGDM based on preference-approval structure are designed.
