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» An Optimization Framework for Query Recommendation
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ICDE
2006
IEEE
146views Database» more  ICDE 2006»
14 years 2 months ago
Supporting Predicate-Window Queries in Data Stream Management Systems
The window query model is widely used in data stream management systems where the focus of a continuous query is limited to a set of the most recent tuples. In this dissertation, ...
Thanaa M. Ghanem
DLOG
2007
13 years 10 months ago
Optimizing Tableau Reasoning in ALC Extended with Uncertainty
Abstract. There has been an increased interest in recent years to incorporate uncertainty in Description Logics (DLs), and a number of proposals have been put forward for modeling ...
Volker Haarslev, Hsueh-Ieng Pai, Nematollaah Shiri
ICDE
2008
IEEE
119views Database» more  ICDE 2008»
14 years 2 months ago
NGS: a framework for multi-domain query answering
— If we consider a query involving multiple domains, such as “find all database conferences held within six months in locations whose seasonal average temperature is 28◦ C a...
Daniele Braga, Diego Calvanese, Alessandro Campi, ...
SIGMOD
2006
ACM
110views Database» more  SIGMOD 2006»
14 years 8 months ago
Supporting ad-hoc ranking aggregates
This paper presents a principled framework for efficient processing of ad-hoc top-k (ranking) aggregate queries, which provide the k groups with the highest aggregates as results....
Chengkai Li, Kevin Chen-Chuan Chang, Ihab F. Ilyas
ESWS
2005
Springer
14 years 1 months ago
Temporal RDF
The Resource Description Framework (RDF) is a metadata model and language recommended by the W3C. This paper presents a framework to incorporate temporal reasoning into RDF, yieldi...
Claudio Gutiérrez, Carlos A. Hurtado, Aleja...