Data processing: artificial intelligence – Neural network – Learning task
Reexamination Certificate
2006-01-03
2006-01-03
Knight, Anthony (Department: 2121)
Data processing: artificial intelligence
Neural network
Learning task
C706S012000
Reexamination Certificate
active
06983264
ABSTRACT:
The present invention provides methods and apparatus to stably separate and extract an original signal from multiple signals by a few calculation steps when multiple signals have been observed in a mixed state. In an example embodiment, signals are separated by introducing a function having a monotonously increasing characteristic like an exponential type function as a cost function, and applying an adaptive algorithm that minimizes that cost function in terms of a signal separation matrix. Then, an error signale(t) is calculated based ony(t) formed by this nonlinear function, the estimated separation matrixW(t−1) estimated at the previous cycle, and the observed signalx(t) at that time. Then, based on the calculated error signale(t), the update of the separation matrixW(t) at that time is performed such that consideration weight is increased when estimation errors are large using the cost function having a monotonously increasing characteristic.
REFERENCES:
patent: 5293405 (1994-03-01), Gersbach et al.
patent: 5652541 (1997-07-01), Yang et al.
patent: 5706402 (1998-01-01), Bell
patent: 5999956 (1999-12-01), Deville
Multi-layer Neural Networks WIth A Local Adaptive Learning Rule Ror Blind Separation of Source Signals, by A. Cichocki, W. Kasprzak, S. Amari, International Symposium on Nonlinear Theory And Its Applications (NOLTA '95) Las Vegas, Dec. 10-14, 1995.
Simon, Haykin, “Ch. 20, Blind Deconvolution ”, Adaptive Filter Theory, Second Edition, Prentice Hall (1991), pp. 722-756.
Simon Haykin, “Ch. 1, The Blind Deconvolution Problem”, Blind Deconvolution, (ed.) Prentice Hall (1994), pp. 1-7.
Sandro Bellini, “Ch. 2, Bussgang Techniques for Blind Deconvolution and Equalization”, Blind Deconvolution, S. Haykin (ed.) Prentice Hall (1994), pp. 8-57.
Simon Haykin, “Ch. 11, Self-Organizing Systems III: Information-Theoretic Models”, Neural Networks: A Comprehensive Foundation, S. Haykin (ed.) MacMillan (1994), pp. 444-472.
A New Determination Method for Aigaas/gaas Hbt Large-Signal Model Parameters Using Bias Dependent Noise Parameters and S-ParametersHayama, N.; Shimizu, J.; Honjo, K.; Microwave Conference, 1992. APMC '92. 1992 Asia-Pacific ,vol.: 1 , Aug. 11-13, 1992.
Adaptive blind signal separation using a risk-sensitive criterion Shimizu, J.; Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on ,vol.: 2, May 6-9, 2001 pp.:69-72 vol. 2.
Application of giant magnetostrictive materials to positioning actuators Yamamoto, Y.; Eda, H.; Shimizu, J.; Advanced Intelligent Mechatronics, 1999. Proceedings. 1999 IEEE/ASME Inernational Conference on , Sep. 19-23, 1999 pp.:215-220.
Blind signal separation and speech recognition in the frequency domainKoutras, A.; Dermatas, E.; Kokkinakis, G.; Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on , vol.: 1, Sep. 5-8, 1999.
Blind signal separation for MA mixture model Xieting Ling; Wei Tian; Bin Liu; Acoustics, Speech, and Signal Processing, 1995. ICASSP-95., 1995 International Conference on , vol.: 5, May 9-12, 1995 pp.:3387-3390 vol. 5.
Multichannel blind signal deconvolution using high order statistics Moreau, E.; Thirion, N.; Statistical Signal and Array Processing, 1996. Proceedings., 8th IEEE Signal Processing Workshop on (Cat. No.96TB10004, Jun. 24-26, 1996 pp.:336-339.
Blind signal separation revisited Obradovic, D.; Deco, G.; Decision and Control, 1997., Proceedings of the 36th IEEE Conference on , vol. 2 , Dec. 10-12, 1997 pp.:1591-1596 vol.2.
Herzberg Louis P.
Holmes Michael B.
International Business Machines - Corporation
Knight Anthony
LandOfFree
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