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» A study of query length
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CIKM
1998
Springer
14 years 8 days ago
Supporting Fast Search in Time Series for Movement Patterns in Multiple Scales
An important investigation of time series involves searching for \movement" patterns, such as \going up" or \going down" or some combinations of them. Movement patt...
Yunyao Qu, Changzhou Wang, Xiaoyang Sean Wang
WWW
2008
ACM
14 years 8 months ago
Analysis of geographic queries in a search engine log
Geography is becoming increasingly important in web search. Search engines can often return better results to users by analyzing features such as user location or geographic terms...
Qingqing Gan, Josh Attenberg, Alexander Markowetz,...
TKDE
2010
197views more  TKDE 2010»
13 years 2 months ago
Filtering Data Streams for Entity-Based Continuous Queries
The idea of allowing query users to relax their correctness requirements in order to improve performance of a data stream management system (e.g., location-based services and senso...
Reynold Cheng, Benjamin C. M. Kao, Alan Kwan, Suni...
ICDT
2010
ACM
180views Database» more  ICDT 2010»
14 years 5 months ago
Foundations of SPARQL Query Optimization
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the Semantic W...
Michael Schmidt, Michael Meier, Georg Lausen
SEBD
2007
121views Database» more  SEBD 2007»
13 years 9 months ago
Query Answering in Expressive Variants of DL-Lite
The use of ontologies in various application domains, such as Data Integration, the Semantic Web, or ontology-based data management, where ontologies provide the access to large am...
Alessandro Artale, Diego Calvanese, Roman Kontchak...