7576 search results - page 387 / 1516 » On Querying Ontologies and Databases |
193
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SIGMOD
1999
ACM
15 years 12 months ago
1999
ACM
In this paper we present a mechanism for translating constraint queries, i.e., Boolean expressions of constraints, across heterogeneous information sources. Integrating such syste...
198
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FQAS
2006
Springer
15 years 11 months ago
2006
Springer
Searchers' difficulty in formulating effective queries for their information needs is well known. Analysis of search session logs shows that users often pose short, vague quer...
294
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SIGMOD
2007
ACM
16 years 7 months ago
2007
ACM
This paper investigates a class of transform queries proposed by XQuery Update [6]. A transform query is defined in terms of XML update syntax. When posed on an XML tree T, it ret...
242
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SSD
2007
Springer
16 years 1 months ago
2007
Springer
We address continuously processing an aggregation join query over data streams. Queries of this type involve both join and aggregation operations, with windows specified on join ...
232
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ESWS
2005
Springer
16 years 1 months ago
2005
Springer
While classic information retrieval methods return whole documents as a result of a query, many information demands would be better satisfied by fine-grain access inside the docu...