Robust cooperation against mutations via costly expulsion

Wang, Xiaofeng; Duh, Maja; Perc, Matjaž

doi:10.1209/0295-5075/132/38001

Cited by 20 publications

(7 citation statements)

References 51 publications

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“…A general conclusion is that networks do not support or inhibit cooperation, but their impact depends on the micro-level mechanisms characterized by the strategy update rules individuals employ [ 124 , 127 ]. Results from statistical physics highlight the robust and universal features of phase transitions in problems of cooperation in networks [ 98 , 121 , 122 , 128 , 129 ], the impact of noise [ 130 ], mutations [ 131 , 132 ], punishment [ 129 ] and quenched distribution of types—which slows down relaxation towards the stationary state extremely [ 133 ]—therein.…”

Section: Network and Cooperationmentioning

confidence: 99%

Networks of reliable reputations and cooperation: a review

Takács

Gross

Testori

et al. 2021

Phil. Trans. R. Soc. B

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Reputation has been shown to provide an informal solution to the problem of cooperation in human societies. After reviewing models that connect reputations and cooperation, we address how reputation results from information exchange embedded in a social network that changes endogenously itself. Theoretical studies highlight that network topologies have different effects on the extent of cooperation, since they can foster or hinder the flow of reputational information. Subsequently, we review models and empirical studies that intend to grasp the coevolution of reputations, cooperation and social networks. We identify open questions in the literature concerning how networks affect the accuracy of reputations, the honesty of shared information and the spread of reputational information. Certain network topologies may facilitate biased beliefs and intergroup competition or in-group identity formation that could lead to high cooperation within but conflicts between different subgroups of a network. Our review covers theoretical, experimental and field studies across various disciplines that target these questions and could explain how the dynamics of interactions and reputations help or prevent the establishment and sustainability of cooperation in small- and large-scale societies. This article is part of the theme issue ‘The language of cooperation: reputation and honest signalling’.

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Section: Network and Cooperationmentioning

confidence: 99%

Networks of reliable reputations and cooperation: a review

Takács

Gross

Testori

et al. 2021

Phil. Trans. R. Soc. B

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“…The past two decades have witnessed the great achievement of social dynamics on exploring the fundamental mechanism of collective behaviors [41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. Emergency evacuation, as a typical example of social dynamics, is an active and attractive field of urban traffic research [56][57][58].…”

Section: Conclusion -mentioning

confidence: 99%

Influence of pedestrian psychology on evacuation dynamics with the guide of emergency signage

Jiang¹,

Zhou²,

Zhang³

et al. 2022

EPL

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How to simulate the true pedestrian psychology who face emergency is an important issue that decides evacuation efficiency. Pedestrian psychology during the evacuation process is complex, abstract and difficult to quantify directly. Based on the typical social force model, this paper improves the pedestrian direction selection procedure and introduces “weight factor” to adjust the degree of contribution of “the density factor” and “the distance factor” to pedestrians’ choice of moving direction. In this model, pedestrians can not only roughly estimate the distance between themselves and each exit, but also judge the degree of crowd gathering near each exit by virtue of the electronic display screen in the center of the cross aisle. Simulation results show that, for configuration with multi-rooms and multi-exits, when the pedestrian number reaches a certain level, only considering the distance factor will lead to uneven distribution of the crowd, therefore inducing obvious congestion. On the other hand, concentrating too much on the density factor make pedestrians hesitate to choose the appropriate exit. In conclusion, we should comprehensively consider the impact of the “density factor”and the “distance factor”, which helps to provide feasible evacuation strategies for emergency situations and to improve both evacuation efficiency and exit utilization.

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“…The replicator-mutator equation is a set of differential equations describing the evolution of frequencies of different strategies in a population that takes into account both selection and mutation mechanisms. It is a powerful and important tool given that in many social and, more generally, biological settings mutation is non-negligible [1,23,30,37,38,40]. It has been employed in the study of, among other applications, population genetics [12], autocatalytic reaction networks [34], language evolution [25], the evolution of cooperation [17,24] and dynamics of behavior in social networks [26].…”

Section: The Replicator-mutator Equationmentioning

confidence: 99%

Statistics of the number of equilibria in random social dilemma evolutionary games with mutation

Duong

Han

2021

Eur. Phys. J. B

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In this paper, we study analytically the statistics of the number of equilibria in pairwise social dilemma evolutionary games with mutation where a game’s payoff entries are random variables. Using the replicator–mutator equations, we provide explicit formulas for the probability distributions of the number of equilibria as well as other statistical quantities. This analysis is highly relevant assuming that one might know the nature of a social dilemma game at hand (e.g., cooperation vs coordination vs anti-coordination), but measuring the exact values of its payoff entries is difficult. Our delicate analysis shows clearly the influence of the mutation probability on these probability distributions, providing insights into how varying this important factor impacts the overall behavioural or biological diversity of the underlying evolutionary systems. Graphic abstract

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Robust cooperation against mutations via costly expulsion

Cited by 20 publications

References 51 publications

Networks of reliable reputations and cooperation: a review

Networks of reliable reputations and cooperation: a review

Influence of pedestrian psychology on evacuation dynamics with the guide of emergency signage

Statistics of the number of equilibria in random social dilemma evolutionary games with mutation

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