Abstract Information-communication technology promotes collaborative environments like
Wikipedia where, however, controversy and conflicts can appear. To describe the rise …

Wikipedia is a prime example of today's value production in a collaborative environment.
Using this example, we model the emergence, persistence and resolution of severe conflicts …

The formation of agents' opinions in a social system is the result of an intricate equilibrium
among several driving forces. On the one hand, the social pressure exerted by peers favors …

We review some recent endeavors and add some new results to characterize and
understand underlying mechanisms in Wikipedia (WP), the paradigmatic example of …

We discuss two models of opinion dynamics. We first present a brief review of the
Hegselmann and Krause (HK) compromise model in two dimensions, showing that it is …

In this paper we discuss opinion dynamics in the opinion changing rate (OCR) model,
recently proposed in Pluchino et al.[Int. J. Mod. Phys. C 16 (4)(2005) 515–531]. The OCR …

Abstract Models of the convergence of opinion in social systems have been the subject of
considerable recent attention in the physics literature. These models divide into two classes …

We study opinion dynamics in a population of interacting adaptive agents voting on a set of
issues represented by vectors. We consider agents who can classify issues into one of two …

In this paper we analyze emergent collective phenomena in the evolution of opinions in a
society structured into few interacting nodes of a network. The presented mathematical …

We propose a nonlinear voter model to study the emergence of global consensus in opinion
dynamics. In our model, agent i agrees with one of binary opinions with the probability that is …