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Communication Dans Un Congrès Année : 2016

Low cost and efficient kurtosis-based deflationary ICA method: application to MRS sources separation problem.

Résumé

Improving the execution time and the numerical complexity of the well-known kurtosis-based maximization method, the RobustICA, is investigated in this paper. A Newton-based scheme is proposed and compared to the conventional RobustICA method. A new implementation using the nonlinear Conjugate Gradient one is investigated also. Regarding the Newton approach, an exact computation of the Hessian of the considered cost function is provided. The proposed approaches and the considered implementations inherit the global plane search of the initial RobustICA method for which a better convergence speed for a given direction is still guaranteed. Numerical results on Magnetic Resonance Spectroscopy (MRS) source separation show the efficiency of the proposed approaches notably the quasi-Newton one using the BFGS method.
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hal-01476136 , version 1 (24-02-2017)

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Majd Saleh, Ahmad Karfoul, Amar Kachenoura, Lotfi Senhadji, Laurent Albera. Low cost and efficient kurtosis-based deflationary ICA method: application to MRS sources separation problem.. Conference proceedings : . Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, Institute of Electrical and Electronics Engineers (IEEE), 2016, Feb 2016, Orlando, United States. pp.3191-3194, ⟨10.1109/EMBC.2016.7591407⟩. ⟨hal-01476136⟩
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