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» Representations of structural closure operators
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ICDT
2010
ACM
180views Database» more  ICDT 2010»
15 years 1 months ago
Composing local-as-view mappings: closure and applications
Schema mapping composition is a fundamental operation in schema management and data exchange. The mapping composition problem has been extensively studied for a number of mapping ...
Patricia C. Arocena, Ariel Fuxman, Renée J....
DKE
2002
218views more  DKE 2002»
14 years 9 months ago
Computing iceberg concept lattices with T
We introduce the notion of iceberg concept lattices and show their use in knowledge discovery in databases. Iceberg lattices are a conceptual clustering method, which is well suit...
Gerd Stumme, Rafik Taouil, Yves Bastide, Nicolas P...
CIKM
1999
Springer
15 years 1 months ago
Binary String Relations: A Foundation for Spatiotemporal Knowledge Representation
The paper is concerned with the qualitative representation of spatiotemporal relations. We initially propose a multiresolution framework for the representation of relations among ...
Vasilis Delis, Thanasis Hadzilacos
ICDE
2008
IEEE
142views Database» more  ICDE 2008»
15 years 10 months ago
An Inflationary Fixed Point Operator in XQuery
ct The backbone of the XML data model, namely ordered, unranked trees, is inherently recursive and it is natural to equip the associated languages with constructs that can query su...
Loredana Afanasiev, Torsten Grust, Maarten Marx, J...
CLA
2007
14 years 11 months ago
A New Concise Representation of Frequent Patterns through Disjunctive Search Space
The interest in a further pruning of the set of frequent patterns that can be drawn from real-life datasets is growing up. In fact, it is a quite survival reflex towards providing...
Tarek Hamrouni, Islem Denden, Sadok Ben Yahia, Eng...