P2P系统的资源质量评价策略研究

Resource Quality Ranking Strategy in P2P System

P2P系统中,请求资源的节点发出搜索请求,并从提供资源的节点接收资源信息列表。而目前实际应用的许多P2P系统都忽略了资源质量的信息。请求资源的节点无从获知资源列表中资源的质量信息,导致用户往往对众多相似的资源感到无所适从,常常需要作多次尝试才找到满意的资源)。文章根据P2P系统的特征,结合传统Web搜索引擎和现实中超市服务的模型的优点,提出了一种资源质量评价策略,较好地解决了上述问题。

In P2P systems,peers searching for resources make search queries and receive replies from other peers.However,in most P2P systems,now used in practice,such replies only contain the elementary information about the resource while no relative information about the qualities of the resource is mentioned.As a result,users of nodes which initialize queries,have no means to know about the resource qualities including the service qualities of resource providers.This induces users' redundant attempts before attaining satisfactory resources from the practicable providers.In this paper,on the base of P2P systems' characteristics,it proposes a novel strategy for resource quality ranking.It simulates the service model of supermarkets in the real world and bears virtues of the traditional web search engine which could solve the problems mentioned above soundly.