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» On Query Algebras for Probabilistic Databases
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CORR
2008
Springer
107views Education» more  CORR 2008»
13 years 7 months ago
Semantics and Evaluation of Top-k Queries in Probabilistic Databases
Abstract. We study here fundamental issues involved in top-k query evaluation in probabilistic databases. We consider simple probabilistic databases in which probabilities are asso...
Xi Zhang, Jan Chomicki
ICDE
2010
IEEE
210views Database» more  ICDE 2010»
14 years 7 days ago
IQ^P: Incremental Query Construction, a Probabilistic Approach
—This paper presents IQP - a novel approach to bridge the gap between usability of keyword search and expressiveness of database queries. IQP enables a user to start with an arbi...
Elena Demidova, Xuan Zhou, Wolfgang Nejdl
SIGMOD
2008
ACM
143views Database» more  SIGMOD 2008»
14 years 7 months ago
XML query optimization in the presence of side effects
The emergence of database languages with side effects, notably for XML, raises significant challenges for database compilers and optimizers. In this paper, we extend an algebra fo...
Giorgio Ghelli, Nicola Onose, Kristoffer Hø...
DBPL
1995
Springer
144views Database» more  DBPL 1995»
13 years 11 months ago
An Algebraic Framework for Physical OODB Design
Physical design for object-oriented databases is still in its infancy. Implementation decisions often intrude into the conceptual design (such as inverse links and object decompos...
Leonidas Fegaras, David Maier