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Voter models and external influence

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  • Jimit R. Majmudar
  • Stephen M. Krone
  • Bert O. Baumgaertner
  • Rebecca C. Tyson

Abstract

In this paper, we extend the voter model (VM) and the threshold voter model (TVM) to include external influences modeled as a jump process. We study the newly-formulated models both analytically and computationally, employing diffusion approximations and mean field approximations. We derive results pertaining to the probability of reaching consensus on a particular opinion and also the expected consensus time. We find that although including an external influence leads to a faster consensus in general, this effect is more pronounced in the VM as compared to the TVM. Our findings suggest the potential importance of external influences in addition to local interactions.

Suggested Citation

  • Jimit R. Majmudar & Stephen M. Krone & Bert O. Baumgaertner & Rebecca C. Tyson, 2020. "Voter models and external influence," The Journal of Mathematical Sociology, Taylor & Francis Journals, vol. 44(1), pages 1-11, January.
    • Handle: RePEc:taf:gmasxx:v:44:y:2020:i:1:p:1-11
    DOI: 10.1080/0022250X.2019.1625349
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    Cited by:

    1. Bernardes, Américo T. & Ribeiro, Leonardo Costa, 2021. "Information, opinion and pandemic," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 565(C).

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