基于小世界现象的学科信息门户链接设计优化策略

Hyperlink Design Optimization Strategies to Subject Based Information Gateways——based on Small-world Phenomenon

从平均最短路径、集团系数、对数路径和中心节点描述了小世界网络的特性和模型,从知识组织和用户行为的角度指出学科信息网络具有更为明显的小世界现象。采用小世界度量指标对CSDL4个学科信息门户进行分析,发现网络链接存在的问题。据此提出学科信息门户链接设计的优化策略:采用知识链接技术发展多重链接、基于凝聚子群分析和语义网确定链接集合边界、基于数据挖掘和知识地图技术寻找捷径、运用信息计量和社会网络分析方法识别中心节点。

This paper describes the mode of small-world network from characteristic path length, clustering coefficient, short cut and central node. And it further points out the small-world phenomenon also exists in subject based information gateways from perspective of knowledge organization and user behavior. Using factors of social network analysis, the hyperlinks in four subject based information gateways of CSDL are analyzed and problems are found. Then the paper proposes optimized strategies for hyperlink design, including developing multiple links, determining link set boundaries based on cohesive subgroup and semantic web analysis, seeking shortcut with the help of data mining and knowledge map, identifying central node using informetrics and social network analysis method.