274 search results - page 47 / 55 » Computational complexity of queries based on itemsets |
WEBI
2001
Springer
15 years 4 months ago
2001
Springer
In the proposed data model for XML databases, an XML element is directly represented as a ground (variable-free) XML expression—a generalization of an XML element by incorporatio...
142
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CI
2000
15 years 7 days ago
2000
Kowalski and Sergot's Event Calculus (EC) is a simple temporal formalism that, given a set of event occurrences, derives the maximal validity intervals (MVIs) over which prop...
VLDB
2004
ACM
15 years 5 months ago
2004
ACM
Traditional databases have focused on the issue of reducing I/O cost as it is the bottleneck in many operations. As databases become increasingly accepted in areas such as Geograp...
129
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DALT
2005
Springer
15 years 6 months ago
2005
Springer
Developing applications that make effective use of machine-readable knowledge sources as promised by the Semantic Web vision is attracting much of current research interest; this v...
142
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BMCBI
2011
14 years 7 months ago
2011
Background: The Cell Ontology (CL) is an ontology for the representation of in vivo cell types. As biological ontologies such as the CL grow in complexity, they become increasingl...