Abstract：A kernel-based algorithm is proposed to solve the nonlinear expansion problem of slow feature analysis (SFA). By using the kernel trick, the difficulties of computing directly in high dimensional space are avoided. Because of the full use of nonlinear information of the data, its output is steady. Meanwhile, based on the objective analysis of the proposed algorithm, a formula is put forward to estimate the output slowness of the signal and it is utilized as a guide line to select parameters of the kernel functions. Experimental results show the effectiveness of the proposed algorithm.
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2011, Vol. 24 
