Effect of strategy-assortativity on investor sharing games in the market
Physica A: Statistical Mechanics and its Applications, ISSN: 0378-4371, Vol: 514, Page: 211-225
2019
- 8Citations
- 5Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
An investor sharing game is proposed in a heterogeneous population which is divided into two kinds of groups, such as weak-power investors and strong-power investors. Economically, the degree of monopoly in the market is introduced in the game. Measuring the strategy-assortativity, the probability p decides what kind of investors’ partner in the game. We show that there are three kinds of equilibrium states in the process. In equilibrium states, all of weak-power investors cooperate while the density of strong-power cooperators depends on p. Social welfare is highest if every one cooperates. In order to promote cooperation in strong-power groups, higher strategy-assortativity is needed in a more monopolized market. Interestingly, given the degree of monopoly, when the ratio of strong-power investor’s amount to weak-power investor’s amount rises, the emergence of cooperative behaviors in strong-power groups only requires a lower p.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0378437118311889; http://dx.doi.org/10.1016/j.physa.2018.09.056; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85053843623&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0378437118311889; https://dx.doi.org/10.1016/j.physa.2018.09.056
Elsevier BV
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