Stover, Richard, Managing Editor/Publisher has reference to this Academic Journal, PHwiki organized this Journal Iterated Prisoners Dilemma on Alliance Network Tomoki Furukawazono Yusuke Takada Takashi Iba Graduate School of Media in addition to Governance, Keio University Faculty of Policy Management, Keio University Social System Analysis with the concept of Complex System in addition to Autopoietic System Complex System Society as the swarm / group of agents in addition to its interactions. Autopoietic System Society as the nexus of communication The difference between Social System / Social Structure Proposed by Niklas Luhmann Underst in addition to ing the social systems through modeling in addition to simulation
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PlatBox as a new tools as long as thinking PlatBox Simulator a software plat as long as m to execute in addition to to analyze the agent-based social simulations. Component Builder The tool as long as designing the model component plugged into PlatBox Simulator. The modeler can develop his/her simulation program just by drawing model diagrams in the modeling language (UML). Multi-Agent simulation on Social Network of agents Dynamics on the social network Dynamics of the social network PlatBox as a new tools as long as thinking Alliance Network NATO Japan-U.S. Alliance Nation Node, Alliance Edge Alliance can be considered as network will examine how the cooperation within nations emerges in the alliances in addition to helps create a stable network. This research,
Alliance Dilemma (Snyder 1984) It is ideal as long as allies to give full support as long as each other e.g.) Franco-Russian Alliance (1892-1917) Most cases end up in a dilemma e.g.) Japan-US Alliance Ab in addition to oning allies creates a chance to attack as long as others. From this payoff matrix, Alliance Dilemma = Prisoners Dilemma Experiment To see the difficulty of maintaining the alliance Alliance as long as ms a network + Alliance Dilemma = Prisoners Dilemma Iterated Prisoners Dilemma game will be played on the Alliance Network Dilemma Game Px points P points Strategy Change P Px P Px IF Change strategy with this percentage Maintain its strategy Repeat this process Based on Santos in addition to Pacheco (2005) Payoff depending on its own strategy
Parameter Percentage of initial cooperators Payoff as long as free riders() Evaluation Year Steps Alliance Data from Correlates of War http://cow2.la.psu.edu/ Simulation Results Fraction of cooperators Shows the great influence of the free-riders in an Alliance Network The results show high fraction of cooperators in the years 1964-1976 WHY step0 step1 step2 Betrayer increases but U.K. in addition to France stay cooperative YEAR
Betrayer decreases due to U.K. in addition to France step31 step32 step33 Analysis of Inner Mechanism Fraction of cooperators steps Nations with its own multilateral alliances works to maintain the cooperation Conclusion & Consideration In the Alliance network that Japan belonged to after WWII, The betrayal in the alliance causes a great effect not only within the alliance but to the whole network For the Alliance network, the existence of multilateral alliance, such as of French or British, helps to maintain the cooperation within the alliance network
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Stover, Richard Managing Editor/Publisher
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