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CVPR
2001
IEEE
14 years 12 months ago
Convex and Non-convex Illuminant Constraints for Dichromatic Colour Constancy
The dichromatic reflectance model introduced by Shafer [16] predicts that the colour signals of most materials fall on a plane spanned by a vector due to the material and a vector...
Graham D. Finlayson, Gerald Schaefer
AAAI
2011
12 years 9 months ago
A Feasible Nonconvex Relaxation Approach to Feature Selection
Variable selection problems are typically addressed under a penalized optimization framework. Nonconvex penalties such as the minimax concave plus (MCP) and smoothly clipped absol...
Cuixia Gao, Naiyan Wang, Qi Yu, Zhihua Zhang
JCT
2006
73views more  JCT 2006»
13 years 9 months ago
Colouring lines in projective space
Let V be a vector space of dimension v over a field of order q. The q-Kneser graph has the kdimensional subspaces of V as its vertices, where two subspaces and are adjacent if and...
Ameera Chowdhury, Chris D. Godsil, Gordon F. Royle
CPAIOR
2007
Springer
14 years 4 months ago
Connections in Networks: Hardness of Feasibility Versus Optimality
We study the complexity of combinatorial problems that consist of competing infeasibility and optimization components. In particular, we investigate the complexity of the connectio...
Jon Conrad, Carla P. Gomes, Willem Jan van Hoeve, ...
IV
2003
IEEE
111views Visualization» more  IV 2003»
14 years 3 months ago
Colour merging for the visualization of biomolecular sequence data
This paper introduces a novel technique for the visualization of data at various levels of detail. This is based on a colour-based representation of the data, where “high levelâ...
Mark Alston, Colin G. Johnson, Gary Robinson