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Description of the minimizers of least squares regularized with \(\ell_0\)-norm. Uniqueness of the global minimizer. (English) Zbl 1281.65092

MSC:
65K05 Numerical mathematical programming methods
90C26 Nonconvex programming, global optimization
90C20 Quadratic programming
65F20 Numerical solutions to overdetermined systems, pseudoinverses
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