467 search results - page 37 / 94 » Building data warehouses with semantic data |
107
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DASFAA
2008
IEEE
15 years 6 months ago
2008
IEEE
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...
ESWS
2006
Springer
15 years 3 months ago
2006
Springer
Because metadata that underlies semantic web applications is gathered from distributed and heterogeneous data sources, it is important to ensure its quality (i.e., reduce duplicate...
ICSE
2004
IEEE-ACM
15 years 12 months ago
2004
IEEE-ACM
Semantic Web, the next generation of Web, gives data well-defined and machine-understandable meaning so that they can be processed by remote intelligent agents cooperatively. Onto...
190
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ICDE
2001
IEEE
16 years 1 months ago
2001
IEEE
We consider the problems of computing aggregation queries in temporal databases, and of maintaining materialized temporal aggregate views efficiently. The latter problem is partic...
104
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ACL
1989
15 years 29 days ago
1989
Comparative expressions (CEs) such as "bigger than" and "more oranges than" are highly ambiguous, and their meaning is context dependent. Thus, they pose probl...