Primal Dual Methods


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Primal-dual Interior-Point Methods


Primal-dual Interior-Point Methods

Author: Stephen J. Wright

language: en

Publisher: SIAM

Release Date: 1997-01-01


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In the past decade, primal-dual algorithms have emerged as the most important and useful algorithms from the interior-point class. This book presents the major primal-dual algorithms for linear programming in straightforward terms. A thorough description of the theoretical properties of these methods is given, as are a discussion of practical and computational aspects and a summary of current software. This is an excellent, timely, and well-written work. The major primal-dual algorithms covered in this book are path-following algorithms (short- and long-step, predictor-corrector), potential-reduction algorithms, and infeasible-interior-point algorithms. A unified treatment of superlinear convergence, finite termination, and detection of infeasible problems is presented. Issues relevant to practical implementation are also discussed, including sparse linear algebra and a complete specification of Mehrotra's predictor-corrector algorithm. Also treated are extensions of primal-dual algorithms to more general problems such as monotone complementarity, semidefinite programming, and general convex programming problems.

The Design of Competitive Online Algorithms Via a Primal-Dual Approach


The Design of Competitive Online Algorithms Via a Primal-Dual Approach

Author: Niv Buchbinder

language: en

Publisher: Now Publishers Inc

Release Date: 2009


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Extends the primal-dual method to the setting of online algorithms, and shows its applicability to a wide variety of fundamental problems.

The Design of Approximation Algorithms


The Design of Approximation Algorithms

Author: David P. Williamson

language: en

Publisher: Cambridge University Press

Release Date: 2011-04-26


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Discrete optimization problems are everywhere, from traditional operations research planning problems, such as scheduling, facility location, and network design; to computer science problems in databases; to advertising issues in viral marketing. Yet most such problems are NP-hard. Thus unless P = NP, there are no efficient algorithms to find optimal solutions to such problems. This book shows how to design approximation algorithms: efficient algorithms that find provably near-optimal solutions. The book is organized around central algorithmic techniques for designing approximation algorithms, including greedy and local search algorithms, dynamic programming, linear and semidefinite programming, and randomization. Each chapter in the first part of the book is devoted to a single algorithmic technique, which is then applied to several different problems. The second part revisits the techniques but offers more sophisticated treatments of them. The book also covers methods for proving that optimization problems are hard to approximate. Designed as a textbook for graduate-level algorithms courses, the book will also serve as a reference for researchers interested in the heuristic solution of discrete optimization problems.