Mixed Hegselmann-Krause Dynamics II

TL;DR

This paper extends the mixed Hegselmann-Krause opinion dynamics model to include nondeterministic updates and dynamic social relationships, analyzing stability and showing it encompasses other models like Deffuant.

Contribution

It introduces a nondeterministic version of the mixed HK model with evolving social ties, analyzing stability and unifying it with other opinion models.

Findings

Conditions for asymptotic stability identified

Model covers HK and Deffuant models

Dynamic social relationships analyzed

Abstract

The mixed Hegselmann-Krause (HK) model consists of a finite number of agents characterized by their opinion, a vector in $\mathbf{R^d}$. For the deterministic case, each agent updates its opinion by the rule: decide its degree of stubbornness and mix its opinion with the average opinion of its neighbors, the agents whose opinion differs by at most some confidence threshold from its opinion at each time step. The mixed model is studied deterministically in \cite{mHK}. In this paper, we study it nondeterministically and involve a social relationship among the agents which can vary over time. We investigate circumstances under which asymptotic stability holds. Furthermore, we indicate the mixed model covers not only the HK model but also the Deffuant model.