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Primal-dual interior-point methods with asymmetric barriers

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Author Info
NESTEROV, Yurii (UniversitŽ catholique de Louvain (UCL). Center for Operations Research and Econometrics (CORE))
Abstract

In this paper we develop several polynomial-time interior-point methods (IPM) for solving nonlinear primal-dual conic optimization problem. We assume that the barriers for the primal and the dual cone are not conjugate. This broken symmetry does not allow to apply the standard primal-dual IPM. However, we show that in this situation it is also possible to develop very efficient optimization methods, which satisfy all desired qualities, including the infeasible-start features. Our technique is based on asymmetric primal-dual barrier augmented by squared residual of the primal-dual linear system.

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Paper provided by Université catholique de Louvain, Center for Operations Research and Econometrics (CORE) in its series CORE Discussion Papers with number 2008057.

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Date of creation: 01 Oct 2008
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Handle: RePEc:cor:louvco:2008057

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Related research
Keywords: conic optimization; self-concordant barriers; polynomial-time methods; interior-point methods; path-following methods; potential-reduction methods; infeasible start.;

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