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» Coordination on Lie groups
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WS
2005
ACM
14 years 1 months ago
Secure time synchronization service for sensor networks
In this paper, we analyze attacks on existing time synchronization protocols for wireless sensor networks. We propose a secure time synchronization toolbox to counter these attack...
Saurabh Ganeriwal, Srdjan Capkun, Chih-Chieh Han, ...
ICA
2004
Springer
14 years 1 months ago
Some Gradient Based Joint Diagonalization Methods for ICA
Abstract. We present a set of gradient based orthogonal and nonorthogonal matrix joint diagonalization algorithms. Our approach is to use the geometry of matrix Lie groups to devel...
Bijan Afsari, Perinkulam S. Krishnaprasad
AISC
2010
Springer
14 years 21 days ago
Formal Proof of SCHUR Conjugate Function
Abstract. The main goal of our work is to formally prove the correctness of the key commands of the SCHUR software, an interactive program for calculating with characters of Lie gr...
Franck Butelle, Florent Hivert, Micaela Mayero, Fr...
DIAGRAMS
2000
Springer
14 years 7 days ago
Bar Charts Recognition Using Hough Based Syntactic Segmentation
Bar charts are common data representations in scientific and technical papers. In order to recognize the printed bar charst, we present a new Hough based bar chart recognition algo...
Yan Ping Zhou, Chew Lim Tan
WCE
2007
13 years 9 months ago
MR Image Reconstruction from Pseudo-Hex Lattice Sampling Patterns Using Separable FFT
Abstract— Common MRI sampling patterns in kspace, such as spiral trajectories, have nonuniform density and do not lie on a rectangular grid. We propose mapping the sampled data t...
Jae-Ho Kim, Fred L. Fontaine