CoXML: A cooperative XML query answering system

被引：0
|
作者：
Liu, Shaorong [1 ]
Chu, Wesley W. [2 ]
机构：
[1] IBM Silicon Valley Lab, San Jose, CA 95141 USA
[2] Univ Calif Los Angeles, Dept Comp Sci, Los Angeles, CA 90095 USA
来源：
ADVANCES IN DATA AND WEB MANAGEMENT, PROCEEDINGS | 2007年 / 4505卷
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The heterogeneity nature of XML data creates the need for approximate query answering. In this paper, we present an XML system that cooperates with users to provide user-specific approximate query answering. The key features of the system include: 1) a query language that allows users to specify approximate conditions and relaxation controls; 2) a relaxation index structure, XTAH, that enables the system to provide user-desired relaxations as specified in the queries; and 3) a ranking model that incorporates both content and structure similarities in evaluating the relevancy of approximate answers. We evaluate our system with the INEX 05 test collections. The results reveal the expressiveness of the language, show XTAH's capability in providing user-desired relaxation control and demonstrate the effectiveness of the ranking model.
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收藏
页码：614 / +
页数：2
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