1791 search results - page 149 / 359 » Semantics and Complexity of SPARQL |
COLING
2002
15 years 4 months ago
2002
The relative logical scope of multiple modifiers within NP is often semantically significant. This paper proposes a structurally based method for computing the relative scope of s...
267
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ICDE
2008
IEEE
16 years 6 months ago
2008
IEEE
A fundamental problem in information integration is that of designing the relationships, called schema mappings, between two schemas. The specification of a semantically correct sc...
234
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ICDT
2009
ACM
16 years 5 months ago
2009
ACM
We study containment and equivalence of (unions of) conjunctive queries on relations annotated with elements of a commutative semiring. Such relations and the semantics of positiv...
169
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RULEML
2009
Springer
15 years 11 months ago
2009
Springer
Rule bases are increasingly being used as repositories of knowledge content on the Semantic Web. As the size and complexity of these rule bases s, developers and end users need met...
141
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APSCC
2008
IEEE
15 years 11 months ago
2008
IEEE
The variety and heterogeneity of legacy systems at the application level have contributed to the complexity of interoperability provision among different application domains. In t...