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TCS
1998
15 years 6 months ago
Axiomatisation of Functional Dependencies in Incomplete Relations
Incomplete relations are relations which contain null values, whose meaning is \value is at present unknown". Such relations give rise to two types of functional dependency (...
Mark Levene, George Loizou
TCS
1998
15 years 6 months ago
TWDM Multichannel Lightwave Hypercube Networks
The hypercube is a widely used interconnection topology as it presents a lot of attractive properties. Recently, the hypercube has been proposed as a virtual topology for TWDM mul...
Peng-Jun Wan
TCS
1998
15 years 6 months ago
Foundations of Aggregation Constraints
We introduce a new constraint domain, aggregation constraints, that is useful in database query languages, and in constraint logic programming languages that incorporate aggregate...
Kenneth A. Ross, Divesh Srivastava, Peter J. Stuck...
TIP
1998
128views more  TIP 1998»
15 years 6 months ago
Multigrid anisotropic diffusion
Abstract—A multigrid anisotropic diffusion algorithm for image processing is presented. The multigrid implementation provides an efficient hierarchical relaxation method that fa...
Scott T. Acton
TIP
1998
161views more  TIP 1998»
15 years 6 months ago
Robust anisotropic diffusion
—Relations between anisotropic diffusion and robust statistics are described in this paper. Specifically, we show that anisotropic diffusion can be seen as a robust estimation p...
Michael J. Black, Guillermo Sapiro, David H. Marim...
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