基于遗传算法的P2P激励机制

针对P2P系统中共享存储资源的搭便车和公共悲剧问题，提出了一种基于遗传算法的P2P存储资源共享激励机制，提供资源的节点根据遗传算法选择最优策略分配资源，以使其贡献值最大化，贡献值大的节点其奇支配使用的共享存储资源越多，仿真实验表明，该机制能有效地实现P2P系统中存储资源分配的公平性和效率，达到了激励节点参与共享资源，抑制节点自私行为的目的．     

Efficient Search in P2P File Sharing System

A new routing algorithm of peer-to-peer file sharing system with routing indices was proposed, in which a node forwards a query to neighbors that are more likely to have answers based on its statistics. The proposed algorithm was tested by creating a P2P simulator and varying the input parameters, and was compared to the search algorithms using flooding （FLD） and random walk （RW）. The result shows that with the proposed design, the queries are muted effectively, the network flows are reduced remarkably, and the peer-to-peer file sharing system gains a good expansibility.