Austrian Academy of Sciences
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Zatzka, Hans; ursprüngl. Čačka Johann Franz, Ps. Zabateri, J. Bernard, P. Ronsard
No full text(1859 - 1945), Male
Titelei. Sprachkunst. Beiträge zur Literaturwissenschaft|Sprachkunst L / 2019, 2. Halbband|
No full textStefan Maurer, Doris Neumann-Rieser und Günther Stocker, Diskurse des Kalten Krieges. Eine andere österreichische Nachkriegsliteratur. Sprachkunst. Beiträge zur Literaturwissenschaft|Sprachkunst L / 2019, 2. Halbband|
No full textA subspace-accelerated split Bregman method for sparse data recovery with joint -type regularizers. ETNA - Electronic Transactions on Numerical Analysis
No full textWe propose a subspace-accelerated Bregman method for the linearly constrained minimization of functions of the form, where is a smooth convex function and represents a linear operator,e.g., a finite difference operator, as in anisotropic total variation and fused lasso regularizations. Problems of this type arise in a widevariety of applications, including portfolio optimization, learning of predictive models from functional magnetic resonance imaging (fMRI) data, and source detection problems in electroencephalography. The use of is aimed at encouraging structured sparsity in the solution. The subspaces where the acceleration is performed are selected so that the restrictionof the objective function is a smooth function in a neighborhood of the current iterate. Numerical experiments for multi-period portfolioselection problems using real data sets show the effectiveness of the proposed method