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- W2951284711 abstract "We study sparse approximate solutions to convex optimization problems. It is known that in many engineering applications researchers are interested in an approximate solution of an optimization problem as a linear combination of elements from a given system of elements. There is an increasing interest in building such sparse approximate solutions using different greedy-type algorithms. The problem of approximation of a given element of a Banach space by linear combinations of elements from a given system (dictionary) is well studied in nonlinear approximation theory. At a first glance the settings of approximation and optimization problems are very different. In the approximation problem an element is given and our task is to find a sparse approximation of it. In optimization theory an energy function is given and we should find an approximate sparse solution to the minimization problem. It turns out that the same technique can be used for solving both problems. We show how the technique developed in nonlinear approximation theory, in particular, the greedy approximation technique can be adjusted for finding a sparse solution of an optimization problem." @default.
- W2951284711 created "2019-06-27" @default.
- W2951284711 creator A5089517099 @default.
- W2951284711 date "2012-06-02" @default.
- W2951284711 modified "2023-09-27" @default.
- W2951284711 title "Greedy approximation in convex optimization" @default.
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- W2951284711 doi "https://doi.org/10.48550/arxiv.1206.0392" @default.
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