14248 search results - page 219 / 2850 » Queries |
125
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SPIRE
2001
Springer
15 years 9 months ago
2001
Springer
Most queries to text search engines are ranked or Boolean. Phrase querying is a powerful technique for refining searches, but is expensive to implement on conventional indexes. I...
144
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VL
1999
IEEE
15 years 9 months ago
1999
IEEE
In this paper we propose a visual interface for the specification of predicates to be used in queries on spatio-temporal databases. The approach is based on a visual specification...
146
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ECTEL
2006
Springer
15 years 8 months ago
2006
Springer
We propose a mediator architecture that allows a learning system to retrieve learning objects from heterogeneous repositories. A mediating component accepts queries formulated in a...
137
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EDBT
2008
ACM
15 years 6 months ago
2008
ACM
In peer-to-peer data management systems query allocation is a critical issue for the good operation of the system. This task is challenging because participants may prefer to perf...
172
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AAAI
2010
15 years 6 months ago
2010
Conjunctive query answering is a key reasoning service for many ontology-based applications. In order to improve scalability, many Semantic Web query answering systems give up com...