English

The limit point in the Jante's law process has an absolutely continuous distribution

Probability 2023-11-09 v2 Dynamical Systems

Abstract

We study a stochastic model of consensus formation, introduced in 2015 by Grinfeld, Volkov and Wade, who called it a multidimensional randomized Keynesian beauty contest. The model was generalized by Kennerberg and Volkov, who called their generalization the Jante's law process. We consider a version of the model where the space of possible opinions is a convex body B\mathcal{B} in Rd\mathbb{R}^d. NN individuals in a population each hold a (multidimensional) opinion in B\mathcal{B}. Repeatedly, the individual whose opinion is furthest from the center of mass of the NN current opinions chooses a new opinion, sampled uniformly at random from B\mathcal{B}. Kennerberg and Volkov showed that the set of opinions that are not furthest from the center of mass converges to a random limit point. We show that the distribution of the limit opinion is continuous, thus proving the conjecture made after Proposition 3.2 in Grinfeld et al.

Keywords

Cite

@article{arxiv.2211.15237,
  title  = {The limit point in the Jante's law process has an absolutely continuous distribution},
  author = {Edward Crane and Stanislav Volkov},
  journal= {arXiv preprint arXiv:2211.15237},
  year   = {2023}
}

Comments

47 pages, 5 figures