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» A New General Purpose Parallel Database System
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IS
2007
13 years 8 months ago
Browsing large online data tables using generalized query previews
Companies, government agencies, and other organizations are making their data available to the world over the Internet. They often use large online relational tables for this purp...
Egemen Tanin, Ben Shneiderman, Hairuo Xie
APWEB
2007
Springer
14 years 3 months ago
Managing a Geographic Database from Mobile Devices Through OGC Web Services
We present in this paper a system for the management of geographic databases from mobile devices. The architecture of the system is extensible in the sense that it can be adapted t...
Nieves R. Brisaboa, Miguel Rodríguez Luaces...
VIP
2001
13 years 10 months ago
Image Segmentation on Spiral Architecture
Spiral Architecture is a relatively new and powerful approach to general purpose machine vision system. It contains very useful geometric and algebraic properties. Two algebraic o...
Qiang Wu, Xiangjian He, Tom Hintz
IADIS
2008
13 years 10 months ago
Dagma: Mining Directed Acyclic Graphs
We present how to efficiently mine a set of directed acyclic graphs (DAGs) for unconnected, both multi- or single-rooted, and induced fragments. With a new canonical form that is ...
T. Werth, A. Dreweke, Marc Wörlein, Ingrid Fi...
PODS
2007
ACM
159views Database» more  PODS 2007»
14 years 9 months ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...