Aggregate queries over ontologies

Diego Calvanese, E. Kharlamov, W. Nutt, Camilo Thorne
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引用次数: 49

Abstract

Answering queries over ontologies is an important issue for the Semantic Web. Aggregate queries were widely studied for relational databases but almost no results are known for aggregate queries over ontologies. In this work we investigate the latter problem. We propose syntax and semantics for epistemic aggregate queries over ontologies and study query answering for MAX, MIN, COUNT, CNTD, SUM, AVG queries for the ontology language DL-LiteA.
聚合本体上的查询
回答对本体的查询是语义Web的一个重要问题。对关系数据库的聚合查询进行了广泛的研究,但对本体的聚合查询几乎没有结果。在这项工作中,我们研究后一个问题。我们提出了本体认知聚合查询的语法和语义,并研究了本体语言DL-LiteA的MAX、MIN、COUNT、CNTD、SUM、AVG查询的查询回答。
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