TY - GEN
T1 - Extraction of independent components from hybrid mixture
T2 - 1998 23rd IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
AU - Kung, S. Y.
AU - Mejuto, C.
PY - 1998
Y1 - 1998
N2 - A hybrid mixture is a mixture of supergaussian, gaussian, and subgaussian independent components (ICs). This paper addresses extraction of ICs from a hybrid mixture. There are two kinds of (single-output vs. all-outputs) kurtosis function to be considered as a contrast function. We advocate the former approach due to its (1) simple and closed-form analysis, and (2) numerical convergence and computational saving. Via this approach, all (and only) the positive local maxima (resp. negative local minima) can yield supergaussian (resp, subgaussian) ICs from any mixture (Kung 1997). We also propose a network algorithm, kurtosis-based independent component network (KuicNet), for recursively extracting ICs. Numerical and convergence properties are analyzed and several application examples demonstrated.
AB - A hybrid mixture is a mixture of supergaussian, gaussian, and subgaussian independent components (ICs). This paper addresses extraction of ICs from a hybrid mixture. There are two kinds of (single-output vs. all-outputs) kurtosis function to be considered as a contrast function. We advocate the former approach due to its (1) simple and closed-form analysis, and (2) numerical convergence and computational saving. Via this approach, all (and only) the positive local maxima (resp. negative local minima) can yield supergaussian (resp, subgaussian) ICs from any mixture (Kung 1997). We also propose a network algorithm, kurtosis-based independent component network (KuicNet), for recursively extracting ICs. Numerical and convergence properties are analyzed and several application examples demonstrated.
UR - http://www.scopus.com/inward/record.url?scp=84892171190&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84892171190&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.1998.675488
DO - 10.1109/ICASSP.1998.675488
M3 - Conference contribution
AN - SCOPUS:84892171190
SN - 0780344286
SN - 9780780344280
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 1209
EP - 1212
BT - Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
Y2 - 12 May 1998 through 15 May 1998
ER -