483 search results - page 37 / 97 » Evaluating Top-k Selection Queries |
EDBT
2008
ACM
13 years 9 months ago
2008
ACM
In P2P systems where query initiators and information providers do not necessarily share the same ontology, semantic interoperability generally relies on ontology matching or sche...
EDBT
2009
ACM
14 years 2 months ago
2009
ACM
Materialized views (MV) can significantly improve the query performance of relational databases. In this paper, we consider MVs to optimize complex scenarios where many heterogen...
AAAI
2008
13 years 10 months ago
2008
Traditional information retrieval systems use query words to identify relevant documents. In difficult retrieval tasks, however, one needs access to a wealth of background knowled...
ICDE
2007
IEEE
14 years 2 months ago
2007
IEEE
Retrieval queries that combine structural constraints with keyword search represent a significant challenge to XML data management systems. Queries are expected to be answered as...
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
Moving objects databases managing spatial objects with continuously changing position and extent over time have recently found large interest in the database community. Queries ab...