Title
Soft Consensus And Network Dynamics In Group Decision Making
Abstract
We propose a dynamical network model for consensus reaching in group decision making. The model combines the minimization of a soft measure of collective dissensus and an individual inertial mechanism which emulates opinion changing aversion. Both components of the dynamics are nonlinear. The collective consensual trend corresponds to a process of anisotropic diffusion among the various individual preference structures. The anisotropy is designed so as to outline and enhance the natural group segmentation into homogeneous preference subgroups (weak consensus). The individual inertial mechanism, on the other hand, opposes changes from the original preferences and provides an appropriate framework to deal with preference outliers. We examine in detail the simple case in which each decision maker must choose between only two alternatives. Finally we comment on the possibility of incorporating in the dynamics a form of transitivity constraint regarding the group segmentation. (C) 1999 John Wiley & Sons, Inc.
Year
DOI
Venue
1999
10.1002/(SICI)1098-111X(199901)14:1<63::AID-INT5>3.0.CO;2-S
INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS
Keywords
Field
DocType
network dynamics,group decision making
Inertial frame of reference,Mathematical economics,Network dynamics,Fuzzy logic,Expert system,Artificial intelligence,Network model,Machine learning,Dynamical system,Mathematics,Group decision-making,Transitive relation
Journal
Volume
Issue
ISSN
14
1
0884-8173
Citations 
PageRank 
References 
25
1.95
6
Authors
3
Name
Order
Citations
PageRank
Mario Fedrizzi114829.78
Michele Fedrizzi234220.01
r a marques pereira3908.76