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DASFAA
2008
IEEE
168views Database» more  DASFAA 2008»
14 years 1 months ago
SemanticTwig: A Semantic Approach to Optimize XML Query Processing
Twig pattern matching (TPM) is the core operation of XML query processing. Existing approaches rely on either efficient data structures or novel labeling/indexing schemes to reduce...
Zhifeng Bao, Tok Wang Ling, Jiaheng Lu, Bo Chen
AI
2007
Springer
14 years 1 months ago
Rethinking the Semantics of Complex Nominals
Complex Nominals (CNs) have simple syntactic structure that conceals non-trivial semantic characteristics. While speakers of natural languages combine noun(s)/adjective(s) with a h...
Nabil Abdullah, Richard A. Frost
AI
2004
Springer
13 years 7 months ago
A unifying semantics for time and events
We give a formal semantics for a highly expressive language for representing temporal relationships and events. This language, which we call Versatile Event Logic (VEL), provides ...
Brandon Bennett, Antony Galton
AAAI
2000
13 years 8 months ago
Exploiting a Thesaurus-Based Semantic Net for Knowledge-Based Search
With the growth of on-line information, the need for better resource location services is growing rapidly. A popular goal is to conduct search in terms of concepts, rather than wo...
Peter Clark, John Thompson, Heather Holmback, Lisb...
SEMWEB
2010
Springer
13 years 5 months ago
SPARQL beyond Subgraph Matching
We extend the Semantic Web query language SPARQL by defining the semantics of SPARQL queries under the entailment regimes of RDF, RDFS,
Birte Glimm, Markus Krötzsch