Social network group decision making: Managing self-confidence-based consensus model with the dynamic importance degree of experts and trust-based feedback mechanism

2019 ◽  
Vol 505 ◽  
pp. 215-232 ◽  
Author(s):  
Xia Liu ◽  
Yejun Xu ◽  
Rosana Montes ◽  
Francisco Herrera
Keyword(s):  
Decision Making ◽  
Social Network ◽  
Group Decision Making ◽  
Group Decision ◽  
Feedback Mechanism ◽  
Consensus Model ◽  
Self Confidence

A CONSENSUS MODEL FOR GROUP DECISION-MAKING PROBLEMS WITH INTERVAL FUZZY PREFERENCE RELATIONS

2012 ◽  
Vol 11 (04) ◽  
pp. 709-725 ◽  
Author(s):  
J. M. TAPIA GARCÍA ◽  
M. J. DEL MORAL ◽  
M. A. MARTÍNEZ ◽  
E. HERRERA-VIEDMA
Keyword(s):  
Decision Making ◽  
Group Decision Making ◽  
Group Decision ◽  
Selection Process ◽  
Preference Relation ◽  
Feedback Mechanism ◽  
Consensus Model ◽  
Preference Relations ◽  
Fuzzy Preference Relations ◽  
Fuzzy Preference

Interval fuzzy preference relations can be useful to express decision makers' preferences in group decision-making problems. Usually, we apply a selection process and a consensus process to solve a group decision situation. In this paper, we present a consensus model for group decision-making problems with interval fuzzy preference relations. This model is based on two consensus criteria, a consensus measure and a proximity measure, and also on the concept of coincidence among preferences. We compute both consensus criteria in the three representation levels of a preference relation and design an automatic feedback mechanism to guide experts in the consensus reaching process. We show an application example in social work.

Optimization-Based Consensus Model to Solve Multi-Criteria Large Group Decision Making Problems

2020 ◽  
Vol 22 (02) ◽  
pp. 2040010
Author(s):  
Anjali Singh ◽  
Anjana Gupta
Keyword(s):  
Decision Making ◽  
Group Decision Making ◽  
Group Decision ◽  
Optimization Theory ◽  
Feedback Mechanism ◽  
Management Decision ◽  
Consensus Model ◽  
Suggested Approach ◽  
Large Group ◽  
Time Problem

In this contribution, a consensus model is proposed to acquire a unified and converging solution of multi-criteria large group decision making problems. Unlike the iterative process and feedback mechanism based models, the suggested approach features the optimization theory to establish the consensus in one go only among the efficient experts. The time salvation characteristic of the model makes it expedient for the emergency planning and management decision problems. The algorithm is validated using the hurricane evacuation notification time problem of United States.

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