Szukana fraza: [Abstract = "In this paper, we discuss the Tikhonov regularized version of the Fast Combinatorial NonNegative Least Squares \(FC\-NNLS\) algorithm \(proposed by Benthem and Keenan in 2004\), where the regularization parameter starts from a large value and decreases gradually with iterations. A geometrical analysis and justification of this approach are presented. The numerical experiments, carried out for various benchmarks of spectral signals, demonstrate that this kind of regularization, when applied to the FC\-NNLS algorithm, is essential to obtain good performance."]

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