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» Optimization Using Tuple Subsumption
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SEMWEB
2007
Springer
14 years 1 months ago
Optimizing the Crisp Representation of the Fuzzy Description Logic SROIQ
Classical ontologies are not suitable to represent imprecise nor uncertain pieces of information. Fuzzy Description Logics were born to represent the former type of knowledge, but ...
Fernando Bobillo, Miguel Delgado, Juan Góme...
PODS
2010
ACM
207views Database» more  PODS 2010»
14 years 12 days ago
Understanding cardinality estimation using entropy maximization
Cardinality estimation is the problem of estimating the number of tuples returned by a query; it is a fundamentally important task in data management, used in query optimization, ...
Christopher Ré, Dan Suciu
GECCO
2003
Springer
156views Optimization» more  GECCO 2003»
14 years 16 days ago
Facts and Fallacies in Using Genetic Algorithms for Learning Clauses in First-Order Logic
Over the last few years, a few approaches have been proposed aiming to combine genetic and evolutionary computation (GECCO) with inductive logic programming (ILP). The underlying r...
Flaviu Adrian Marginean
ICDE
2006
IEEE
146views Database» more  ICDE 2006»
14 years 1 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
DASFAA
2010
IEEE
189views Database» more  DASFAA 2010»
13 years 10 months ago
Efficient Skyline Maintenance for Streaming Data with Partially-Ordered Domains
We address the problem of skyline query processing for a count-based window of continuous streaming data that involves both totally- and partially-ordered attribute domains. In thi...
Yuan Fang, Chee-Yong Chan