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» Fuzzy queries and relational databases
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AI
2011
Springer
14 years 6 months ago
Contracting preference relations for database applications
The binary relation framework has been shown to be applicable to many real-life preference handling scenarios. Here we study preference contraction: the problem of discarding sele...
Denis Mindolin, Jan Chomicki
LWA
2004
15 years 1 months ago
Efficient Frequent Pattern Mining in Relational Databases
Data mining on large relational databases has gained popularity and its significance is well recognized. However, the performance of SQL based data mining is known to fall behind ...
Xuequn Shang, Kai-Uwe Sattler, Ingolf Geist
ICDE
2005
IEEE
134views Database» more  ICDE 2005»
15 years 5 months ago
Index Structures for Matching XML Twigs Using Relational Query Processors
Various index structures have been proposed to speed up the evaluation of XML path expressions. However, existing XML path indices suffer from at least one of three limitations: ...
Zhiyuan Chen, Johannes Gehrke, Flip Korn, Nick Kou...
SIGMOD
2006
ACM
194views Database» more  SIGMOD 2006»
15 years 12 months ago
Graph-based synopses for relational selectivity estimation
This paper introduces the Tuple Graph (TuG) synopses, a new class of data summaries that enable accurate selectivity estimates for complex relational queries. The proposed summari...
Joshua Spiegel, Neoklis Polyzotis
ICDE
2011
IEEE
273views Database» more  ICDE 2011»
14 years 3 months ago
Shortcut selection in RDF databases
—An increasing amount of data produced nowadays is in RDF format. While significant work has been performed on view selection and query optimization algorithms in relational dat...
Vicky Dritsou, Panos Constantopoulos, Antonios Del...