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PVLDB
2008
123views more  PVLDB 2008»
15 years 6 months ago
Propagating functional dependencies with conditions
The dependency propagation problem is to determine, given a view defined on data sources and a set of dependencies on the sources, whether another dependency is guaranteed to hold...
Wenfei Fan, Shuai Ma, Yanli Hu, Jie Liu, Yinghui W...
EDBTW
2004
Springer
16 years 20 days ago
Index-Based Keyword Search in Mediator Systems
Many users and applications require the integration of semi-structured data from autonomous, heterogeneous Web sources. Over the last years mediator systems have emerged that use d...
Ingolf Geist
CGF
1998
116views more  CGF 1998»
15 years 7 months ago
A Light Hierarchy for Fast Rendering of Scenes with Many Lights
We introduce a new data structure in the form of a light hierarchy for efficiently ray-tracing scenes with many light sources. An octree is constructed with the point light sourc...
Eric Paquette, Pierre Poulin, George Drettakis
IJSNET
2008
126views more  IJSNET 2008»
15 years 7 months ago
Reliable and energy-efficient routing protocol in dense wireless sensor networks
Delivering sensed data to the sink reliably in sensor networks calls for a scalable, energy-efficient, and error-resilient routing solution. In this paper, a reliable energy-effic...
Min Chen, Taekyoung Kwon, Shiwen Mao, Yong Yuan, V...
DEBU
2007
141views more  DEBU 2007»
15 years 7 months ago
Issues in Building Practical Provenance Systems
The importance of maintaining provenance has been widely recognized, particularly with respect to highly-manipulated data. However, there are few deployed databases that provide p...
Adriane Chapman, H. V. Jagadish