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• W3111567673 abstract "In this paper we aim to minimize the sum of two nonsmooth (possibly also nonconvex) functions in separate variables connected by a smooth coupling function. To tackle this problem we choose a continuous forward-backward approach and introduce a dynamical system which is formulated by means of the partial gradients of the smooth coupling function and the proximal point operator of the two nonsmooth functions. Moreover, we consider variable rates of implicity of the resulting system. We discuss the existence and uniqueness of a solution and carry out the asymptotic analysis of its convergence behaviour to a critical point of the optimization problem, when a regularization of the objective function fulfills the Kurdyka-Łojasiewicz property. We further provide convergence rates for the solution trajectory in terms of the Łojasiewicz exponent. We conclude this work with numerical simulations which confirm and validate the analytical results." @default.
• W3111567673 created "2020-12-21" @default.
• W3111567673 creator A5011677215 @default.
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• W3111567673 date "2021-04-01" @default.
• W3111567673 modified "2023-10-17" @default.
• W3111567673 title "A forward-backward dynamical approach for nonsmooth problems with block structure coupled by a smooth function" @default.
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• W3111567673 doi "https://doi.org/10.1016/j.amc.2020.125822" @default.
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