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» Query Answering in Inconsistent Databases
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PODS
2009
ACM
86views Database» more  PODS 2009»
14 years 8 months ago
Reverse data exchange: coping with nulls
An inverse of a schema mapping M is intended to "undo" what M does, thus providing a way to perform "reverse" data exchange. In recent years, three different f...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
ICDE
2007
IEEE
134views Database» more  ICDE 2007»
14 years 1 months ago
Apply Model Checking to Security Analysis in Trust Management
Trust management is a form of access control that uses delegation to achieve scalability beyond a single organization or federation. However, delegation can be difficult to contr...
Mark Reith, Jianwei Niu, William H. Winsborough
PODS
2009
ACM
124views Database» more  PODS 2009»
14 years 8 months ago
Indexing uncertain data
Querying uncertain data has emerged as an important problem in data management due to the imprecise nature of many measurement data. In this paper we study answering range queries...
Pankaj K. Agarwal, Siu-Wing Cheng, Yufei Tao, Ke Y...
ICCS
2001
Springer
14 years 2 days ago
Large-Scale Cooperatively-Built KBs
We describe a knowledge server that permits Web users to retrieve and add knowledge in a shared knowledge base. The following features distinguish WebKB-2 from other ontology serve...
Philippe Martin, Peter W. Eklund
CLEF
2008
Springer
13 years 9 months ago
A Study of Users' Image Seeking Behaviour in FlickLing
This study aims to explore users' image seeking behaviour when searching for a known, non-annotated image in Flickling provided by iCLEF2008 track. The task assigned to users...
Evgenia Vassilakaki, Frances C. Johnson, Richard J...