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ISCI
2008
93views more  ISCI 2008»
13 years 10 months ago
Safety, domain independence and translation of complex value database queries
This paper considers the theory of database queries on the complex value data model with external functions. Motivated by concerns regarding query evaluation, we first identify re...
Hong-Cheu Liu, Jeffrey Xu Yu, Weifa Liang
ECMDAFA
2005
Springer
87views Hardware» more  ECMDAFA 2005»
14 years 3 months ago
On Relationships Between Query Models
Queries on software artifacts play an important role in novel software development approaches, such as Aspect-Oriented Software Development and OMG's Model Driven Architecture...
Dominik Stein, Stefan Hanenberg, Rainer Unland
ICDT
2007
ACM
106views Database» more  ICDT 2007»
14 years 4 months ago
Trajectory Databases: Data Models, Uncertainty and Complete Query Languages
Moving objects produce trajectories. We describe a data model for trajectories and trajectory samples and an efficient way of modeling uncertainty via beads for trajectory samples....
Bart Kuijpers, Walied Othman
SIGIR
2012
ACM
12 years 12 days ago
An uncertainty-aware query selection model for evaluation of IR systems
We propose a mathematical framework for query selection as a mechanism for reducing the cost of constructing information retrieval test collections. In particular, our mathematica...
Mehdi Hosseini, Ingemar J. Cox, Natasa Milic-Frayl...
DAGSTUHL
2007
13 years 11 months ago
An analytic solution to the alibi query in the bead model for moving object data
Abstract. Moving objects produce trajectories, which are stored in databases by means of finite samples of time-stamped locations. When also speed limitations in these sample poin...
Bart Kuijpers, Walied Othman