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PODS
2007
ACM
159views Database» more  PODS 2007»
14 years 9 months ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...
ICDE
2010
IEEE
244views Database» more  ICDE 2010»
14 years 8 months ago
Propagating Updates Through XML Views Using Lineage Tracing
We address the problem of updating XML views over relational data by translating view updates expressed in the XQuery update facility to embedded SQL updates. Although our XML view...
Leonidas Fegaras
WSDM
2010
ACM
227views Data Mining» more  WSDM 2010»
14 years 6 months ago
Folks in folksonomies: Social link prediction from shared metadata
Web 2.0 applications have attracted a considerable amount of attention because their open-ended nature allows users to create lightweight semantic scaffolding to organize and shar...
Rossano Schifanella, Alain Barrat, Ciro Cattuto, B...
SDM
2009
SIAM
149views Data Mining» more  SDM 2009»
14 years 6 months ago
Near-optimal Supervised Feature Selection among Frequent Subgraphs.
Graph classification is an increasingly important step in numerous application domains, such as function prediction of molecules and proteins, computerised scene analysis, and an...
Alexander J. Smola, Arthur Gretton, Hans-Peter Kri...
SDM
2009
SIAM
235views Data Mining» more  SDM 2009»
14 years 6 months ago
Topic Cube: Topic Modeling for OLAP on Multidimensional Text Databases.
As the amount of textual information grows explosively in various kinds of business systems, it becomes more and more desirable to analyze both structured data records and unstruc...
ChengXiang Zhai, Duo Zhang, Jiawei Han