412 search results - page 54 / 83 » Aggregate queries over ontologies |
CIKM
2008
Springer
14 years 7 days ago
2008
Springer
Query logs record the queries and the actions of the users of search engines, and as such they contain valuable information about the interests, the preferences, and the behavior ...
PODS
2004
ACM
14 years 10 months ago
2004
ACM
Data exchange is the problem of taking data structured under a source schema and creating an instance of a target schema. Given a source instance, there may be many solutions ? ta...
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ICDE
2004
IEEE
14 years 11 months ago
2004
IEEE
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
WWW
2004
ACM
14 years 11 months ago
2004
ACM
We present enhancements for UDDI / DAML-S registries allowing cooperative discovery and selection of Web services with a focus on personalization. To find the most useful service ...
ICDE
1999
IEEE
14 years 11 months ago
1999
IEEE
Range sum queries on data cubes are a powerful tool for analysis. A range sum query applies an aggregation operation (e.g., SUM) over all selected cells in a data cube, where the ...