A Monotone+Skew Splitting Model for Composite Monotone Inclusions in Duality

Details A Monotone+Skew Splitting Model for Composite Monotone Inclusions in Duality A Monotone+Skew Splitting Model for Composite Monotone Inclusions in Duality

2010-11-24

arxiv.org/abs/1011.5517v1

Mathematics

Optimization and Control

Scientific paper

The principle underlying this paper is the basic observation that the problem of simultaneously solving a large class of composite monotone inclusions and their duals can be reduced to that of finding a zero of the sum of a maximally monotone operator and a linear skew-adjoint operator. An algorithmic framework is developed for solving this generic problem in a Hilbert space setting. New primal-dual splitting algorithms are derived from this framework for inclusions involving composite monotone operators, and convergence results are established. These algorithms draw their simplicity and efficacy from the fact that they operate in a fully decomposed fashion in the sense that the monotone operators and the linear transformations involved are activated separately at each iteration. Comparisons with existing methods are made and applications to composite variational problems are demonstrated.

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