Authority-based keyword search in databases

Authority-based keyword search in databases
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DOI:
10.1145/1331904.1331905
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发表时间:
2008-03
期刊:
ACM Trans. Database Syst.
影响因子:
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通讯作者:
Vagelis Hristidis;Heasoo Hwang;Y. Papakonstantinou
Vagelis Hristidis;Heasoo Hwang;Y. Papakonstantinou
中科院分区:
其他
文献类型:
--
作者:
Vagelis Hristidis;Heasoo Hwang;Y. Papakonstantinou

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我们的系统适用于基于权威的排名关键字搜索数据库建模为标记图。使用三个排序因素:与查询的相关性,结果的特异性和重要性。与传统的信息检索相比,所有因素都使用权限流技术来处理,该技术利用数据图的链接结构。我们解决的性能挑战,在计算数据库中的权限流使用预计算和利用数据库模式,如果存在。我们在多个真实的和合成数据集上进行了用户调查和性能实验,以评估我们系统的语义意义和性能。
Our system applies authority-based ranking to keyword search in databases modeled as labeled graphs. Three ranking factors are used: the relevance to the query, the specificity and the importance of the result. All factors are handled using authority-flow techniques that exploit the link-structure of the data graph, in contrast to traditional Information Retrieval. We address the performance challenges in computing the authority flows in databases by using precomputation and exploiting the database schema if present. We conducted user surveys and performance experiments on multiple real and synthetic datasets, to assess the semantic meaningfulness and performance of our system.