关键词: 资源描述框架（RDF）, 分面导航, 语义元数据, 层次聚类

Abstract: Faceted navigation is a widely used information space navigation technology，but faceted interfaces are manually constructed by experience，and lack evaluation system.Considering the semantic constraint of RDF metadata，a conversion method from RDF data model to the relational database is proposed，which includes two steps：mining the suitable predicates as facets using statistical analysis；utilizing the hierarchical clustering algorithm to obtain the properties that are not extracted in the process of statistical analysis.Experimental evaluation shows that this method can not only effectively get the RDF properties that are suitable for navigation without changing the semantic constraint，but also raise the efficiency of search.

Key words: Resource Description Framework（RDF）, faceted navigation, semantic metadata, hierarchical cluster