137 search results - page 9 / 28 » Query optimization for ontology-based information integratio... |
ICDE
1999
IEEE
14 years 8 months ago
1999
IEEE
We develop a data integration approach for the efficient evaluation of queries over autonomous source databases. The approach is based on some novel applications and extensions of...
DPD
1998
13 years 6 months ago
1998
To meet users’ growing needs for accessing pre-existing heterogeneous databases, a multidatabase system (MDBS) integrating multiple databases has attracted many researchers recen...
DEXA
2004
Springer
14 years 15 days ago
2004
Springer
Data integration is a significant challenge: relevant data objects are split across multiple information sources, and often owned by different organizations. The sources represent...
SIGIR
2012
ACM
11 years 9 months ago
2012
ACM
Versioned document collections are collections that contain multiple versions of each document. Important examples are Web archives, Wikipedia and other wikis, or source code and ...
DAWAK
2006
Springer
13 years 10 months ago
2006
Springer
We consider the problem of concurrent execution of multiple frequent itemset queries. If such data mining queries operate on overlapping parts of the database, then their overall I...