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» Foundations of RDF Databases
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PODS
2008
ACM
152views Database» more  PODS 2008»
14 years 7 months ago
Towards a theory of schema-mapping optimization
A schema mapping is a high-level specification that describes the relationship between two database schemas. As schema mappings constitute the essential building blocks of data ex...
Ronald Fagin, Phokion G. Kolaitis, Alan Nash, Luci...
EDBT
2009
ACM
138views Database» more  EDBT 2009»
14 years 2 months ago
FOGGER: an algorithm for graph generator discovery
To our best knowledge, all existing graph pattern mining algorithms can only mine either closed, maximal or the complete set of frequent subgraphs instead of graph generators whic...
Zhiping Zeng, Jianyong Wang, Jun Zhang, Lizhu Zhou
GIS
2005
ACM
14 years 8 months ago
ASPEN: an adaptive spatial peer-to-peer network
Geographic Information Systems (GIS) are increasingly managing very large sets of data and hence a centralized data repository may not always provide the most scalable solution. H...
Haojun Wang, Roger Zimmermann, Wei-Shinn Ku
ICPR
2006
IEEE
14 years 1 months ago
Efficient Night Gait Recognition Based on Template Matching
Gait is a useful biometric which can be used to recognize people at a distance when other biometrics are incapable. However, most work on gait recognition has been visible spectru...
Daoliang Tan, Kaiqi Huang, Shiqi Yu, Tieniu Tan
HICSS
2005
IEEE
152views Biometrics» more  HICSS 2005»
14 years 1 months ago
Knowledge Ontology: A Method for Empirical Identification of 'As-Is' Contextual Knowledge
In this paper, we consider existing approaches to ontology definition and validation. Popular techniques include the use of domain experts or reliance on formal logic. We consider...
Theresa Edgington, T. S. Raghu, Ajay S. Vinze