Paper Abstract and Keywords |
Presentation |
2005-06-27 10:45
Independent Component Analysis of Signals using Local Exponential Nonlinearities Muhammad Tufail, Masahide Abe, Masayuki Kawamata (Tohoku Univ.) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper we propose exponential type nonlinearities in order to blindly separate instantaneous mixtures of signals with any symmetric distributions (using the relative gradient algorithm). These nonlinearities are applied locally, around zero, to avoid degradation of the separating algorithm in the presence of outliers. Such an approach is particularly effective in cases where the sources consist of super-Gaussian signals that inherently contain large data values. The optimal size of the neighborhood, for both continuous and discrete distributions, is obtained by examining the local stability conditions of the relative gradient algorithm. Finally, some computer simulations are presented to demonstrate the superior performance of the proposed idea. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Blind Source Separation / Independent Component Analysis / Relative Gradient Algorithm / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 105, no. 149, SIP2005-28, pp. 19-23, June 2005. |
Paper # |
SIP2005-28 |
Date of Issue |
2005-06-20 (CAS, VLD, SIP) |
ISSN |
Print edition: ISSN 0913-5685 |
Download PDF |
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Conference Information |
Committee |
CAS SIP VLD |
Conference Date |
2005-06-27 - 2005-06-28 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Tohoku University |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Signal Processing, LSI, etc. |
Paper Information |
Registration To |
SIP |
Conference Code |
2005-06-CAS-SIP-VLD |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Independent Component Analysis of Signals using Local Exponential Nonlinearities |
Sub Title (in English) |
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Keyword(1) |
Blind Source Separation |
Keyword(2) |
Independent Component Analysis |
Keyword(3) |
Relative Gradient Algorithm |
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1st Author's Name |
Muhammad Tufail |
1st Author's Affiliation |
Tohoku University (Tohoku Univ.) |
2nd Author's Name |
Masahide Abe |
2nd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
3rd Author's Name |
Masayuki Kawamata |
3rd Author's Affiliation |
Tohoku University (Tohoku Univ.) |
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Speaker |
Author-1 |
Date Time |
2005-06-27 10:45:00 |
Presentation Time |
25 minutes |
Registration for |
SIP |
Paper # |
CAS2005-4, VLD2005-15, SIP2005-28 |
Volume (vol) |
vol.105 |
Number (no) |
no.145(CAS), no.147(VLD), no.149(SIP) |
Page |
pp.19-23 |
#Pages |
5 |
Date of Issue |
2005-06-20 (CAS, VLD, SIP) |