Abstract
Power spectrum and time-frequency representation (TFR) are two significant methods to analyze EEG data in the frequency and in the time-frequency domain. The nonnegative data in the two domains can be modeled using bilinear and multi-linear transform. In this chapter, the nonnegative matrix factorization (NMF) and tensor decomposition of the canonical polyadic and Tucker models are introduced for decomposing the two-way data and the multi-way data including the modes of time, frequency, space, and subject. The strength of each decomposition model is shown by real EEG data example.
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