Local versus global interactions in nonequilibrium transitions: A model of social dynamics

González-Avella, Juan Carlos; Eguı́luz, Vı́ctor M.; Cosenza, M. G.; Klemm, Konstantin; Herrera, Juan López de; Miguel, M. San

doi:10.1103/physreve.73.046119

Cited by 84 publications

(127 citation statements)

References 33 publications

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“…To speed up the simulations, here we choose to keep the media message fixed from the outset, so it really models some alien influence impinging on the population. Explicitly, we generate the culture vector of the virtual agent at random and keep it fixed during the dynamics [19,20]. The interaction of the media (virtual agent) with the real agents is governed by the control parameter p ∈ [0, 1], which may be interpreted as a measure of the strength of the media influence.…”

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confidence: 99%

The media effect in Axelrod's model explained

Peres

Fontanari

2011

EPL

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-We revisit the problem of introducing an external global field -the mass media-in Axelrod's model of social dynamics, where in addition to their nearest neighbors, the agents can interact with a virtual neighbor whose cultural features are fixed from the outset. The finding that this apparently homogenizing field actually increases the cultural diversity has been considered a puzzle since the phenomenon was first reported more than a decade ago. Here we offer a simple explanation for it, which is based on the pedestrian observation that Axelrod's model exhibits more cultural diversity, i.e., more distinct cultural domains, when the agents are allowed to interact solely with the media field than when they can interact with their neighbors as well. In this perspective, it is the local homogenizing interactions that work towards making the absorbing configurations less fragmented as compared with the extreme situation in which the agents interact with the media only.

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confidence: 99%

The media effect in Axelrod's model explained

Peres

Fontanari

2011

EPL

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“…Such spin-flip models are representative of many real situations which offer only two possibilities and therefore are also of great interest [1,17,18], along with the similarities with other physical systems. Axelrod's model for dissemination of culture is particularly different from the rest because the agents interact only if some degree of coincidence exists between them [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…A great deal of effort has been devoted to developing models for describing the properties of systems made up of agents with competing opinions [1,[4][5][6][7][14][15][16][17][18][19][20]. This is of great relevance as human conflicts very often arise from the simultaneous existence of incompatible opinions in populations.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, simple statistical models have been developed for describing social systems [1][2][3][4][5][6][7], the economy [8][9][10][11], etc. Despite the great complexity of such real systems, their main properties can be reproduced by simple models which retain their underlying features, and the explanation for this fact is related to the concept of universality [12,13].…”

Section: Introductionmentioning

confidence: 99%

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Dynamical model for competing opinions

Souza

Gonçalves

2012

Phys. Rev. E

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We propose an opinion model based on agents located at the vertices of a regular lattice. Each agent has an independent opinion (among an arbitrary, but fixed, number of choices) and its own degree of conviction. The latter changes every time two agents which have different opinions interact with each other. The dynamics leads to size distributions of clusters (made up of agents which have the same opinion and are located at contiguous spatial positions) which follow a power law, as long as the range of the interaction between the agents is not too short; i.e., the system self-organizes into a critical state. Short range interactions lead to an exponential cutoff in the size distribution and to spatial correlations which cause agents which have the same opinion to be closely grouped. When the diversity of opinions is restricted to two, a nonconsensus dynamic is observed, with unequal population fractions, whereas consensus is reached if the agents are also allowed to interact with those located far from them. The individual agents' convictions, the preestablished interaction range, and the locality of the interaction between a pair of agents (their neighborhood has no effect on the interaction) are the main characteristics which distinguish our model from previous ones.

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“…On the other hand, one of the extensions of the Axelrod model that have been done consists of the study of Mass Media effects over the society [22][23][24][25]. Surprisingly, the Mass Media has been found to be a destabilizing factor which drives the system to a multicultural state [26].…”

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confidence: 99%

Effects of mass media action on the Axelrod model with social influence

Aguilar

Moreno

2010

Phys. Rev. E

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The use of dyadic interaction between agents, in combination with homophily (the principle that "likes attract") in the Axelrod model for the study of cultural dissemination has two important problems: the prediction of monoculture in large societies and an extremely narrow window of noise levels in which diversity with local convergence is obtained. Recently, the inclusion of social influence has proven to overcome them (A. Flache and M. W. Macey, arXiv:0808.2710). Here we extend the Axelrod model with social influence interaction for the study of Mass Media effects through the inclusion of a super-agent which acts over the whole system and has nonnull overlap with each agent of the society. The dependence with different parameters as the initial social diversity, size effects, Mass Media strength and noise is outlined. Our results might be relevant in several socio-economic contexts and for the study of the emergence of collective behavior in complex social systems.

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Local versus global interactions in nonequilibrium transitions: A model of social dynamics

Cited by 84 publications

References 33 publications

The media effect in Axelrod's model explained

The media effect in Axelrod's model explained

Dynamical model for competing opinions

Effects of mass media action on the Axelrod model with social influence

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