Sciweavers

6660 search results - page 250 / 1332
» Data Analysis for Query Processing
Sort
View
CIKM
2011
Springer
14 years 6 months ago
Semantic data markets: a flexible environment for knowledge management
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 ...
Roberto De Virgilio, Giorgio Orsi, Letizia Tanca, ...
SIGMOD
1999
ACM
181views Database» more  SIGMOD 1999»
15 years 10 months ago
Approximate Computation of Multidimensional Aggregates of Sparse Data Using Wavelets
Computing multidimensional aggregates in high dimensions is a performance bottleneck for many OLAP applications. Obtaining the exact answer to an aggregation query can be prohibit...
Jeffrey Scott Vitter, Min Wang
ICWS
2009
IEEE
16 years 3 months ago
RDF Data-Centric Storage
—The vision of the Semantic Web has brought about new challenges at the intersection of web research and data management. One fundamental research issue at this intersection is t...
Justin J. Levandoski, Mohamed F. Mokbel
SIGIR
2008
ACM
15 years 6 months ago
Crosslingual location search
Address geocoding, the process of finding the map location for a structured postal address, is a relatively well-studied problem. In this paper we consider the more general proble...
Tanuja Joshi, Joseph Joy, Tobias Kellner, Udayan K...
DEXA
2005
Springer
176views Database» more  DEXA 2005»
15 years 12 months ago
Control-Based Quality Adaptation in Data Stream Management Systems
Unlike processing snapshot queries in a traditional DBMS, the processing of continuous queries in a data stream management system (DSMS) needs to satisfy quality requirements such ...
Yi-Cheng Tu, Mohamed Hefeeda, Yuni Xia, Sunil Prab...