Opinion formation of free speech on the directed social network

Jiongming Su (), Hongxu Ma (), Baohong Liu and Qi Li
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Jiongming Su: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, P. R. China
Hongxu Ma: College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, P. R. China
Baohong Liu: College of Information System and Management, National University of Defense Technology, Changsha 410073, P. R. China
Qi Li: College of Information System and Management, National University of Defense Technology, Changsha 410073, P. R. China

International Journal of Modern Physics C (IJMPC), 2014, vol. 25, issue 04, 1-11

Abstract: A dynamical model with continuous opinion is proposed to study how the speech order and the topology of directed social network affect the opinion formation of free speech. In the model, agents express their opinions one by one with random order (RO) or probability order (PO), other agents paying attentions to the speaking agent, receive provider's opinion, update their opinions and then express their new opinions in their turns. It is proved that with the same agentjrepeats its opinion more, other agents who pay their attentions tojand includej's opinion in their confidence level at initial time, will continue approachingj's opinion. Simulation results reveal that on directed scale-free network: (1) the model for PO forms fewer opinion clusters, larger maximum cluster (MC), smaller standard deviation (SD), and needs less waiting time to reach a middle level of consensus than RO; (2) as the parameter of scale-free degree distribution decreases or the confidence level increases, the results often get better for both speech orders; (3) the differences between PO and RO get smaller as the size of network decreases.

Keywords: Opinion dynamics; free speech; bounded confidence; directed scale-free networks; 05.10.-a; 64.60.Cn; 89.75.-k (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0129183114500016

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