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Showing 2012Show all
2 papers · 1 filter
q-bio.NC2012
Online computation of sparse representations of time varying stimuli using a biologically motivated neural network
Tao Hu, Dmitri B. Chklovskii
Natural stimuli are highly redundant, possessing significant spatial and temporal correlations. While sparse coding has been proposed as an efficient strategy employed by neural sy…
math.OC2012★ 2 cited
Variable Metric Random Pursuit
Sebastian U. Stich, Christian L. Müller, Bernd Gärtner
We consider unconstrained randomized optimization of smooth convex objective functions in the gradient-free setting. We analyze Random Pursuit (RP) algorithms with fixed (F-RP) and…