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» Query Evaluation and Optimization in the Semantic Web
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SIGMOD
2007
ACM
225views Database» more  SIGMOD 2007»
14 years 7 months ago
From complete to incomplete information and back
Incomplete information arises naturally in numerous data management applications. Recently, several researchers have studied query processing in the context of incomplete informat...
Lyublena Antova, Christoph Koch, Dan Olteanu
WWW
2006
ACM
14 years 7 months ago
Efficient query subscription processing for prospective search engines
Current web search engines are retrospective in that they limit users to searches against already existing pages. Prospective search engines, on the other hand, allow users to upl...
Utku Irmak, Svilen Mihaylov, Torsten Suel, Samrat ...
EDBT
2012
ACM
247views Database» more  EDBT 2012»
11 years 9 months ago
Heuristics-based query optimisation for SPARQL
Query optimization in RDF Stores is a challenging problem as SPARQL queries typically contain many more joins than equivalent relational plans, and hence lead to a large join orde...
Petros Tsialiamanis, Lefteris Sidirourgos, Irini F...
ICDE
2010
IEEE
434views Database» more  ICDE 2010»
14 years 4 months ago
Progressive Result Generation for Multi-Criteria Decision Support Queries
— Multi-criteria decision support (MCDS) is crucial in many business and web applications such as web searches, B2B portals and on-line commerce. Such MCDS applications need to r...
Elke A. Rundensteiner, Venkatesh Raghavan
SEBD
2007
121views Database» more  SEBD 2007»
13 years 8 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...