【作者】 陶然； 江锦华； 吴羽； 陈刚；

【Author】 Tao Ran,Jiang Jinhua,Wu Yu,and Chen Gang (College of Computer Science and Technology,Zhejiang University,Hangzhou 310027)

【机构】 浙江大学计算机科学与技术学院；

【摘要】 随着在线数据库应用的流行,整个互联网已经被迅速"深化".对于某一特定领域的deep Web,不同的站点往往会提供不同查询能力的查询接口.为了能够集成同一领域内的各个数据源,首先要解决的问题就是查询接口的集成.但是面对数量众多和结构各异的查询接口,基于人工或规则的集成方案显然无法适用.针对这种状况,提出了基于树合并的查询接口全自动集成方法.树结构可以充分体现查询接口属性之间的结构关系,通过树的合并来实现查询接口的集成.该方法不但能保持各个原始接口的结构特征,还具备良好的扩展性,以适应不断频繁更新的查询接口.最后通过多个领域的测试数据证明了本方法的有效性.更多还原

【Abstract】 The Web has been rapidly"deepened"with the prevalence of online databases.For a domain of interest,there often exist many such sources with varied querying capabilities.The query interfaces integration is one of the critical steps toward the integration of heterogeneous Web sources. But the scale of the problem and the diversity of the sources present serious challenges to the conventional manual or rule-based approaches to schema integration.To address these challenges,an interface integration approach via merging schema trees is proposed.The hierarchical nature of query interface can be captured using an ordered tree.And the query interfaces integration is achieved via merging trees.This approach not only can preserve the structure of the individual query interfaces, but also has good scalability to meet the frequently updating.Finally,experiments are performed on five domains to show the effectiveness of the proposed approach.更多还原