Systems Engineering and Electronics ›› 2021, Vol. 43 ›› Issue (12): 3603-3613.doi: 10.12305/j.issn.1001-506X.2021.12.23

• Systems Engineering • Previous Articles     Next Articles

Research on three-stage hesitant fuzzy information fusion method for group consensus

Xiwen TAO*, Wenqi JIANG   

  1. 1. School of Economics and Management, Nanjing University of Science and Technology, Nanjing 210094, China
    2. Jiangsu Industrial Cluster Decision Consulting Research Base, Nanjing 210094, China
  • Received:2021-01-14 Online:2021-11-24 Published:2021-11-30
  • Contact: Xiwen TAO

Abstract:

Individual consistency check, group preference aggregation and group consensus improvement are three key stages of group consensus reaching process (CRP). High degree of consistency and consensus and low consensus cost are important decision-making goals in the three stages of group CRP. By analysing the relation influence of the three stages of group consensus building process on consensus, we construct optimization models for each decision stage. Firstly, considering the evaluation value characteristics of hesitation fuzzy preference relation (HFPR), we design the consistency check and improvement model with local standardization coefficient to provide reliable fuzzy judgment for group information aggregation. Subsequently, the group information aggregation of hesitating fuzzy preference relationship was implemented with proximity degree as induction value, and the consensus threshold is determined by statistical inference, which depicts group consensus level objectively. And then, when the level of group consensus is low, a consensus improvement model containing optimizing aggregation weight and minimum adjustment distance is designed, which effectively reduces the informationloss and iteration. Finally, a comparison with the existing approach is carried out to show the effectiveness and efficiency of the proposed method.

Key words: group consensus, hesitant fuzzy preference relation, consistency, preference adjustment

CLC Number: 

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