نتایج جستجو برای: lagrangian augmented

تعداد نتایج: 72477  

2014
H. Emre Güven Müjdat Çetin

In this paper we present an accelerated Augmented Lagrangian Method for the solution of constrained convex optimization problems in the Basis Pursuit De-Noising (BPDN) form. The technique relies on on Augmented Lagrangian Methods (ALMs), particularly the Alternating Direction Method of Multipliers (ADMM). Here, we present an application of the Constrained Split Augmented Lagrangian Shrinkage Al...

2017
Ellen H. Fukuda Bruno F. Lourenço

In this paper, we study augmented Lagrangian functions for nonlinear semidefinite programming (NSDP) problems with exactness properties. The term exact is used in the sense that the penalty parameter can be taken appropriately, so a single minimization of the augmented Lagrangian recovers a solution of the original problem. This leads to reformulations of NSDP problems into unconstrained nonlin...

Journal: :Computers & Chemical Engineering 2010
Zukui Li Marianthi G. Ierapetritou

To improve thequalityofdecisionmaking in theprocessoperations, it is essential to implement integrated planning and scheduling optimization. Major challenge for the integration lies in that the corresponding optimization problem is generally hard to solve because of the intractable model size. In this paper, ccepted 18 November 2009 vailable online 24 November 2009 eywords: lanning and scheduli...

2000
A. R. Conn Nick Gould A. Sartenaer

ABSTRACT We consider the global and local convergence properties of a class of augmented Lagrangian methods for solving nonlinear programming problems. In these methods, linear and more general constraints are handled in different ways. The general constraints are combined with the objective function in an augmented Lagrangian. The iteration consists of solving a sequence of subproblems; in eac...

Journal: :Comp. Opt. and Appl. 2005
Ernesto G. Birgin R. A. Castillo José Mario Martínez

Augmented Lagrangian algorithms are very popular tools for solving nonlinear programming problems. At each outer iteration of these methods a simpler optimization problem is solved, for which efficient algorithms can be used, especially when the problems are large. The most famous Augmented Lagrangian algorithm for minimization with inequality constraints is known as Powell-Hestenes-Rockafellar...

2017
Jun Zhang Rongliang Chen Chengzhi Deng Shengqian Wang

Recently, many variational models involving high order derivatives have been widely used in image processing, because they can reduce staircase effects during noise elimination. However, it is very challenging to construct efficient algorithms to obtain the minimizers of original high order functionals. In this paper, we propose a new linearized augmented Lagrangian method for Euler’s elastica ...

Journal: :SIAM Journal on Optimization 1996
Andrew R. Conn Nicholas I. M. Gould Annick Sartenaer Philippe L. Toint

We consider the global and local convergence properties of a class of augmented Lagrangian methods for solving nonlinear programming problems. In these methods, linear and more general constraints are handled in different ways. The general constraints are combined with the objective function in an augmented Lagrangian. The iteration consists of solving a sequence of subproblems; in each subprob...

Journal: :Comp. Opt. and Appl. 2006
Paulo J. S. Silva Jonathan Eckstein

We consider the variational inequality problem formed by a general set-valued maximal monotone operator and a possibly unbounded “box” in Rn , and study its solution by proximal methods whose distance regularizations are coercive over the box. We prove convergence for a class of double regularizations generalizing a previously-proposed class of Auslender et al. Using these results, we derive a ...

Journal: :SIAM J. Control and Optimization 2014
Valentin Nedelcu Ion Necoara Quoc Tran-Dinh

We study the computational complexity certification of inexact gradient augmented Lagrangian methods for solving convex optimization problems with complicated constraints. We solve the augmented Lagrangian dual problem that arises from the relaxation of complicating constraints with gradient and fast gradient methods based on inexact first order information. Moreover, since the exact solution o...

2012
Dong Xia

In this paper, an algorithm for sparse learning via Maximum Margin Matrix Factorization(MMMF) is proposed. The algorithm is based on L1 penality and Alternating Direction Method of Multipliers. It shows that with sparse factors, sparse factors method can obtain result as good as dense factors.

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