Accelerated forward–backward algorithms for structured monotone inclusions

In this paper, we develop rapidly convergent forward–backward algorithms for computing zeroes of the sum of two maximally monotone operators. A modification of the classical forward–backward method is considered, by incorporating an inertial term (closed to the acceleration techniques introduced by...

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Veröffentlicht in:Computational optimization and applications Jg. 88; H. 1; S. 167 - 215
Hauptverfasser: Maingé, Paul-Emile, Weng-Law, André
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Springer US 01.05.2024
Springer Nature B.V
Springer Verlag
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ISSN:0926-6003, 1573-2894
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Zusammenfassung:In this paper, we develop rapidly convergent forward–backward algorithms for computing zeroes of the sum of two maximally monotone operators. A modification of the classical forward–backward method is considered, by incorporating an inertial term (closed to the acceleration techniques introduced by Nesterov), a constant relaxation factor and a correction term, along with a preconditioning process. In a Hilbert space setting, we prove the weak convergence to equilibria of the iterates ( x n ) , with worst-case rates of o ( n - 1 ) in terms of both the discrete velocity and the fixed point residual, instead of the rates of O ( n - 1 / 2 ) classically established for related algorithms. Our procedure can be also adapted to more general monotone inclusions. In particular, we propose a fast primal-dual algorithmic solution to some class of convex-concave saddle point problems. In addition, we provide a well-adapted framework for solving this class of problems by means of standard proximal-like algorithms dedicated to structured monotone inclusions. Numerical experiments are also performed so as to enlighten the efficiency of the proposed strategy.
Bibliographie:ObjectType-Article-1
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ISSN:0926-6003
1573-2894
DOI:10.1007/s10589-023-00547-3