412 search results - page 56 / 83 » Aggregate queries over ontologies |
CIKM
2009
Springer
14 years 4 months ago
2009
Springer
Leveraging information from relevance assessments has been proposed as an effective means for improving retrieval. We introduce a novel language modeling method which uses inform...
SIGMOD
1998
ACM
14 years 2 months ago
1998
ACM
The CONTROL project at U.C. Berkeley has developed technologies to provide online behavior for data-intensive applications. Using new query processing algorithms, these technologi...
PVLDB
2010
13 years 8 months ago
2010
Dremel is a scalable, interactive ad-hoc query system for analysis of read-only nested data. By combining multi-level execution trees and columnar data layout, it is capable of ru...
KES
2009
Springer
14 years 2 months ago
2009
Springer
: With the increase in the amount and complexity of information, data warehouse performance has become a constant issue, especially for decision support systems. As decisional expe...
CIKM
2011
Springer
12 years 10 months ago
2011
Springer
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...