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DAGSTUHL
2004
14 years 11 months ago
Optimal Approximation of Elliptic Problems by Linear and Nonlinear Mappings
We study the optimal approximation of the solution of an operator equation A(u) = f by four types of mappings: a) linear mappings of rank n; b) n-term approximation with respect t...
Erich Novak, Stephan Dahlke, Winfried Sickel
TSP
2008
140views more  TSP 2008»
14 years 9 months ago
On the Dual-Tree Complex Wavelet Packet and M-Band Transforms
The two-band discrete wavelet transform (DWT) provides an octave-band analysis in the frequency domain, but this might not be "optimal" for a given signal. The discrete w...
I. Bayram, Ivan W. Selesnick
ICPR
2010
IEEE
14 years 7 months ago
Shape-Based Image Retrieval Using a New Descriptor Based on the Radon and Wavelet Transforms
In this paper, the Radon transform is used to design a new descriptor called Phi-signature invariant to usual geometric transformations. Experiments show the effectiveness of the m...
Nafaa Nacereddine, Salvatore Tabbone, Djemel Ziou,...
ISVC
2009
Springer
15 years 4 months ago
Wavelet-Based Representation of Biological Shapes
Modeling, characterization and analysis of biological shapes and forms are important in many computational biology studies. Shape representation challenges span the spectrum from s...
Bin Dong, Yu Mao, Ivo D. Dinov, Zhuowen Tu, Yongga...
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ICDM
2005
IEEE
125views Data Mining» more  ICDM 2005»
15 years 3 months ago
Alternate Representation of Distance Matrices for Characterization of Protein Structure
The most suitable method for the automated classification of protein structures remains an open problem in computational biology. In order to classify a protein structure with an...
Keith Marsolo, Srinivasan Parthasarathy