Reinforced communication and social navigation generate groups in model networks

TL;DR

This paper presents a model showing how local communication constraints and information flow lead to the emergence of heterogeneous social groups, emphasizing the importance of global information broadcasting.

Contribution

The study introduces a novel model of communication and social navigation demonstrating group formation without assuming individual interest differences.

Findings

Heterogeneous groups emerge from local communication constraints.

Information flow acts as a glue maintaining group cohesion.

Global broadcasting can counteract network fragmentation.

Abstract

To investigate the role of information flow in group formation, we introduce a model of communication and social navigation. We let agents gather information in an idealized network society, and demonstrate that heterogeneous groups can evolve without presuming that individuals have different interests. In our scenario, individuals' access to global information is constrained by local communication with the nearest neighbors on a dynamic network. The result is reinforced interests among like-minded agents in modular networks; the flow of information works as a glue that keeps individuals together. The model explains group formation in terms of limited information access and highlights global broadcasting of information as a way to counterbalance this fragmentation. To illustrate how the information constraints imposed by the communication structure affects future development of real-world systems, we extrapolate dynamics from the topology of four social networks.