265 search results - page 3 / 53 » Logical Queries over Views: Decidability and Expressiveness |
100
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DLOG
2007
15 years 12 days ago
2007
Abstract. Fuzzy Description Logics (f-DLs) have been proposed as formalisms capable of capturing and reasoning about imprecise and vague knowledge. The last years, research in Desc...
SEMWEB
2009
Springer
15 years 4 months ago
2009
Springer
Abstract. This paper presents a decidable fragment for combining ontologies and rules in order-sorted logic programming. We describe ordersorted logic programming with sort, predic...
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IJCAI
2007
14 years 11 months ago
2007
Conjunctive queries play an important role as an expressive query language for Description Logics (DLs). Although modern DLs usually provide for transitive roles, conjunctive quer...
AAAI
2000
14 years 11 months ago
2000
ECAI
1998
Springer
15 years 1 months ago
1998
Springer
Abstract. We extend different Description Logics by concrete domains (such as integers and reals) and by aggregation functions over these domains (such as min;max;count;sum), which...