移动P2P中基于利他惩罚的合作保障机制

Cooperation-Guaranteeing Mechanism Based on Altruism Punishment in Mobile Peer-to-Peer Networks

依据行为经济学中经大量实验验证的"非理性的"利他惩罚行为的存在,提出一种移动P2P系统中基于利他惩罚的合作保障机制——系统中存在非理性节点,即使得不到任何预期收益,为了追求公平,愿意付出一定成本惩罚自私节点的不合作行为,从而约束自私节点的行为,降低其不合作概率,促进节点的合作性.文中通过理论分析和仿真实验对该机制进行了验证,结果表明,利他惩罚保障节点合作是合理的,该机制能够有效地减少系统中自私节点的数量,降低系统的不合作程度.

In this paper, a cooperation-guaranteeing mechanism based on altruism punishment in mobile peer-to- peer networks is presented, which takes into consideration the existence of altruism punishment widely observed in a lot of experiments in behavioral economics. In this mechanism, it is supposed that some nodes in the system have the predisposition to punish the selfish nodes with non-cooperation behaviors, even though they may receive lower payoffs or nothing. The selfish nodes are thereby restricted and their non-cooperation probability is reduced. Theo- retical analysis and numerical simulation show that the proposed mechanism is reasonable and effective in reducing the number of selfish nodes and improving the cooperation.