scholarly journals Seismic multiple removal with a primal-dual proximal algorithm

Author(s):  
Mai Quyen Pham ◽  
Caroline Chaux ◽  
Laurent Duval ◽  
Jean-Christophe Pesquet
2019 ◽  
Vol 64 (10) ◽  
pp. 4050-4065
Author(s):  
Puya Latafat ◽  
Nikolaos M. Freris ◽  
Panagiotis Patrinos

2014 ◽  
Vol 62 (16) ◽  
pp. 4256-4269 ◽  
Author(s):  
Mai Quyen Pham ◽  
Laurent Duval ◽  
Caroline Chaux ◽  
Jean-Christophe Pesquet

2018 ◽  
pp. 115-122

An inexact proximal algorithm for variational inequalities O. Sarmiento, E. A. Papa Quiroz and P. R. Oliveira Programa de Ingeniería de Sistemas y Computación - COPPE, Universidad Federal de Rio de Janeiro, 68511 CEP: 21941-972, Rio de Janeiro, Brasil. DOI: https://doi.org/10.33017/RevECIPeru2015.0018/ Abstract This paper presents a new inexact proximal method for solving monotone variational inequality problems with a given separable structure. The resulting method combines the recent proximal distances theory introduced by Auslender and Teboulle (2006) with a decomposition method given by Chen and Teboulle that was proposed to solve convex optimization problems. This method extends and generalizes proximal methods using Bregman, Phi-divergences and Quadratic logarithmic distances. Taking mild assumptions we prove that the primal-dual sequences produced by algorithm is well-defined and converge to optimal solution of the variational inequality problem. Furthermore, we show some numerical experiments, for the particular case to solve convex optimization problem, showing that the algorithm is perfectly implementable. Keywords: Inexact proximal method, variational inequality, separable structure, proximal distances. Resumen En este artículo presentamos un nuevo método proximal inexacto para resolver problemas de desigualdad variacional monótono con una estructura separable. El método resultante combina la reciente teoria de distancias proximales introducidas por Auslender y Teboulle (2006) con un método de descomposición proximal dado por Chen y Teboulle que fue propuesto para resolver problemas de optimización convexa. Este método extiende y generaliza métodos proximales usando distancias de Bregman, Phi-divergencias y logaritmo cuadrático, Asumiendo hipotesis adecuadas probamos que la sucesión primal-dual generada por el algoritmo está bien definido y converge a la solución óptima de un problema de desigualdad variacional. Además presentamos algunos resultados computacionales para el caso particular de resolver problemas de optimización convexa, mostrando asi que el algoritmo es perfectamente implementable. Descriptores: Método proximal inexacto, desigualdad variacional, estructura separable, distancias proximales.


Author(s):  
Jaya Pratha Sebastiyar ◽  
Martin Sahayaraj Joseph

Distributed joint congestion control and routing optimization has received a significant amount of attention recently. To date, however, most of the existing schemes follow a key idea called the back-pressure algorithm. Despite having many salient features, the first-order sub gradient nature of the back-pressure based schemes results in slow convergence and poor delay performance. To overcome these limitations, the present study was made as first attempt at developing a second-order joint congestion control and routing optimization framework that offers utility-optimality, queue-stability, fast convergence, and low delay.  Contributions in this project are three-fold. The present study propose a new second-order joint congestion control and routing framework based on a primal-dual interior-point approach and established utility-optimality and queue-stability of the proposed second-order method. The results of present study showed that how to implement the proposed second-order method in a distributed fashion.


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