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AAAI
2008
13 years 10 months ago
Minimal Contraction of Preference Relations
Changing preferences is very common in real life. The expressive power of the operations of preference change introduced so far in the literature is limited to adding new informat...
Denis Mindolin, Jan Chomicki
DEXA
2007
Springer
150views Database» more  DEXA 2007»
14 years 2 months ago
Sequence Alignment as a Database Technology Challenge
Abstract. Sequence alignment is an important task for molecular biologists. Because alignment basically deals with approximate string matching on large biological sequence collecti...
Hans Philippi
SIGMOD
2009
ACM
157views Database» more  SIGMOD 2009»
14 years 8 months ago
Authenticated join processing in outsourced databases
Database outsourcing requires that a query server constructs a proof of result correctness, which can be verified by the client using the data owner's signature. Previous aut...
Yin Yang, Dimitris Papadias, Stavros Papadopoulos,...
DLOG
2008
13 years 10 months ago
Taming the Infinite Chase: Query Answering under Expressive Relational Constraints
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
Andrea Calì, Georg Gottlob, Michael Kifer
IV
2002
IEEE
129views Visualization» more  IV 2002»
14 years 1 months ago
Design and Implementation of a Visual Query Language for Large Spatial Databases
In this paper a visual approach to querying in large spatial databases is presented. A diagrammatic technique utilising a data flow metaphor is used to express different kinds of...
Andrew J. Morris, Alia I. Abdelmoty, Douglas Tudho...