On the Strength of Damping Effect in Online User Dynamics for Preventing Flaming Phenomena

Shinichi KIKUCHI
Chisa TAKANO
Masaki AIDA

Publication
IEICE TRANSACTIONS on Communications   Vol.E105-B    No.2    pp.240-249
Publication Date: 2022/02/01
Publicized: 2021/09/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2021CEP0007
Type of Manuscript: Special Section PAPER (Special Section on Emerging Communication Technologies in Conjunction with Main Topics of ICETC2020)
Category: 
Keyword: 
online flaming,  user dynamics,  oscillation model,  eigenvalue,  Laplacian matrix,  

Full Text: FreePDF
Summary: 
As online social networks (OSNs) have become remarkably active, we often experience explosive user dynamics such as online flaming, which can significantly impact the real world. Since the rapidity with which online user dynamics propagates, countermeasures based on social analyses of the individuals who cause online flaming take too much time that timely measures cannot be taken. To consider immediate solutions without individuals' social analyses, a countermeasure technology for flaming phenomena based on the oscillation model, which describes online user dynamics, has been proposed. In this framework, the strength of damping to prevent online flaming was derived based on the wave equation of networks. However, the assumed damping strength was to be a constant independent of the frequency of user dynamics. Since damping strength may generally depend on frequency, it is necessary to consider such frequency dependence in user dynamics. In this paper, we derive the strength of damping required to prevent online flaming under the general condition that damping strength depends on the frequency of user dynamics. We also investigate the existence range of the Laplacian matrix's eigenvalues representing the OSN structure assumed from the real data of OSNs, and apply it to the countermeasure technology for online flaming.