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Joint Blind Source Separation by Multi-set Canonical Correlation Analysis.
IEEE Transactions on Signal Processing ( IF 5.230 ) Pub Date : 2010-03-12 , DOI: 10.1109/tsp.2009.2021636
Yi-Ou Li,Tülay Adalı,Wei Wang,Vince D Calhoun

In this work, we introduce a simple and effective scheme to achieve joint blind source separation (BSS) of multiple datasets using multi-set canonical correlation analysis (M-CCA) [1]. We first propose a generative model of joint BSS based on the correlation of latent sources within and between datasets. We specify source separability conditions, and show that, when the conditions are satisfied, the group of corresponding sources from each dataset can be jointly extracted by M-CCA through maximization of correlation among the extracted sources. We compare source separation performance of the M-CCA scheme with other joint BSS methods and demonstrate the superior performance of the M-CCA scheme in achieving joint BSS for a large number of datasets, group of corresponding sources with heterogeneous correlation values, and complex-valued sources with circular and non-circular distributions. We apply M-CCA to analysis of functional magnetic resonance imaging (fMRI) data from multiple subjects and show its utility in estimating meaningful brain activations from a visuomotor task.
更新日期:2019-11-01

 

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