A multilayer FOCUSS approach for sparse representation

Focal Underdetermined System Solver (FOCUSS) is a powerful method for sparse representation, in which the Lp-norm like cost function is very often used. However, this cost function is not only nondifferentiable but also can be very ill-conditioned in some situations. The local minima problem of FOCU...

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Veröffentlicht in:	Cluster computing 2017-06, Vol.20 (2), p.1325-1332
Hauptverfasser:	Xie, Kan, Shi, Min, Wang, Peitao, Xu, Jie, Lai, Yue
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Approximation Computer Communication Networks Computer Science Cost analysis Cost function Linear programming Multilayers Operating Systems Optimization Processor Architectures Representations Sparsity
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