针对P2P网络知识资源共享中的资源无结构化和缺乏有效的资源导航问题,本文采用知识地图理论对对等网节点知识资源进行统一表示和导航,给出了对等节点的树形知识地图模型,该模型包含三个基本要素:知识单元集合、关系集合和关系集合到知识单元有序偶集合上的映射.在此基础上,以本体概念树为知识资源分类标准,给出了基于树形知识地图模型的对等网节点知识地图的构建方法.并邀请领域专家对树形知识地图的性能进行评价,评价结果表明本文构建的树形知识地图在对等节点知识资源结构化、导航方面具有不错的性能,为有效表示和导航对等网上的知识资源奠定初步的理论基础.%To solve the problems in unstructured database and lack of knowledge resources navigation on Peer-to-Peer networks, a tree-type knowledge map model is presented based on the theory of knowledge map, the model consists of three key elements; knowledge units set, relationships set and the mapping from a relationships set to a ordered pair in knowledge units. On the basis of the model, using a ontology concepts tree as the classification criteria, a method on the construction of knowledge map is proposed for peers on peer-to-peer networks. In addition, the evaluation results given by three experts points that the tree-based method on the construction of knowledge map for peers on peer-to-peer networks has a good performance in peers' knowledge resources representation and navigation.
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