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Computer Science > Social and Information Networks

arXiv:2212.13387 (cs)
[Submitted on 27 Dec 2022]

Title:Finite Time Bounds for Stochastic Bounded Confidence Dynamics

Authors:Sushmitha Shree S, Avhishek Chatterjee, Krishna Jagannathan
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Abstract:In this era of fast and large-scale opinion formation, a mathematical understanding of opinion evolution, a.k.a. opinion dynamics, acquires importance. Linear graph-based dynamics and bounded confidence dynamics are the two popular models for opinion dynamics in social networks. Stochastic bounded confidence (SBC) opinion dynamics was proposed as a general framework that incorporates both these dynamics as special cases and also captures the inherent stochasticity and noise (errors) in real-life social exchanges. Although SBC dynamics is quite general and realistic, its analysis is more challenging. This is because SBC dynamics is nonlinear and stochastic, and belongs to the class of Markov processes that have asymptotically zero drift and unbounded jumps. The asymptotic behavior of SBC dynamics was characterized in prior works. However, they do not shed light on its finite-time behavior, which is often of interest in practice. We take a stride in this direction by analyzing the finite-time behavior of a two-agent system and a bistar graph, which are crucial to the understanding of general multi-agent dynamics. In particular, we show that the opinion difference between the two agents is well-concentrated around zero under the conditions that lead to asymptotic stability of the SBC dynamics.
Comments: A preliminary version of this paper appeared in the proceedings of COMmunication Systems & NETworkS (COMSNETS) 2022. arXiv admin note: substantial text overlap with arXiv:2112.04373
Subjects: Social and Information Networks (cs.SI)
Cite as: arXiv:2212.13387 [cs.SI]
  (or arXiv:2212.13387v1 [cs.SI] for this version)
  https://doi.org/10.48550/arXiv.2212.13387

Submission history

From: Sushmitha Shree S [view email]
[v1] Tue, 27 Dec 2022 07:12:15 UTC (112 KB)
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