Majority dynamics and the median process: Connections, convergence and some new conjectures

Gideon Amir, Rangel Baldasso and Nissan Beilin

Stochastic Processes and their Applications, 2023, vol. 155, issue C, 437-458

Abstract: We consider the median dynamics process in general graphs. In this model, each vertex has an independent initial opinion uniformly distributed in the interval [0,1] and, with rate one, updates its opinion to coincide with the median of its neighbors. This process provides a continuous analog of binary majority dynamics. We deduce properties of median dynamics through this connection and raise new conjectures regarding the behavior of majority dynamics on general graphs. We also prove these conjectures on some graphs where majority dynamics has a simple description.

Keywords: Majority dynamics; Median process (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1016/j.spa.2022.10.015

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