Evolution of cooperation in stochastic games

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387434" target="_blank" >RIV/00216208:11320/18:10387434 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1038/s41586-018-0277-x" target="_blank" >https://doi.org/10.1038/s41586-018-0277-x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41586-018-0277-x" target="_blank" >10.1038/s41586-018-0277-x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evolution of cooperation in stochastic games

Popis výsledku v původním jazyce

Social dilemmas occur when incentives for individuals are misaligned with group interests(1-7). According to the &apos;tragedy of the commons&apos;, these misalignments can lead to overexploitation and collapse of public resources. The resulting behaviours can be analysed with the tools of game theory(8). The theory of direct reciprocity(9-15) suggests that repeated interactions can alleviate such dilemmas, but previous work has assumed that the public resource remains constant over time. Here we introduce the idea that the public resource is instead changeable and depends on the strategic choices of individuals. An intuitive scenario is that cooperation increases the public resource, whereas defection decreases it. Thus, cooperation allows the possibility of playing a more valuable game with higher payoffs, whereas defection leads to a less valuable game. We analyse this idea using the theory of stochastic games(16-19) and evolutionary game theory. We find that the dependence of the public resource on previous interactions can greatly enhance the propensity for cooperation. For these results, the interaction between reciprocity and payoff feedback is crucial: neither repeated interactions in a constant environment nor single interactions in a changing environment yield similar cooperation rates. Our framework shows which feedbacks between exploitation and environment-either naturally occurring or designed-help to overcome social dilemmas.

Název v anglickém jazyce

Evolution of cooperation in stochastic games

Popis výsledku anglicky

Social dilemmas occur when incentives for individuals are misaligned with group interests(1-7). According to the &apos;tragedy of the commons&apos;, these misalignments can lead to overexploitation and collapse of public resources. The resulting behaviours can be analysed with the tools of game theory(8). The theory of direct reciprocity(9-15) suggests that repeated interactions can alleviate such dilemmas, but previous work has assumed that the public resource remains constant over time. Here we introduce the idea that the public resource is instead changeable and depends on the strategic choices of individuals. An intuitive scenario is that cooperation increases the public resource, whereas defection decreases it. Thus, cooperation allows the possibility of playing a more valuable game with higher payoffs, whereas defection leads to a less valuable game. We analyse this idea using the theory of stochastic games(16-19) and evolutionary game theory. We find that the dependence of the public resource on previous interactions can greatly enhance the propensity for cooperation. For these results, the interaction between reciprocity and payoff feedback is crucial: neither repeated interactions in a constant environment nor single interactions in a changing environment yield similar cooperation rates. Our framework shows which feedbacks between exploitation and environment-either naturally occurring or designed-help to overcome social dilemmas.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nature

ISSN

0028-0836

e-ISSN

—

Svazek periodika

559

Číslo periodika v rámci svazku

7713

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

4

Strana od-do

246-249

Kód UT WoS článku

000438240900054

EID výsledku v databázi Scopus

2-s2.0-85049775883