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Geometric Embeddings, Geometric Algorithms, and Combinatorial Optimization

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Release : 2006
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Kind : eBook
Book Rating : 460/5 ( reviews)

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Book Synopsis Geometric Embeddings, Geometric Algorithms, and Combinatorial Optimization by : James Russell Lee

Download or read book Geometric Embeddings, Geometric Algorithms, and Combinatorial Optimization written by James Russell Lee. This book was released on 2006. Available in PDF, EPUB and Kindle. Book excerpt: The present thesis is divided into two parts which address questions of both types (i.e. combinatorial data and geometric data, respectively), leading to new algorithms for a variety of well-known combinatorial problems, new connections between geometry and computer science, and new geometric and analytic information about some classical mathematical objects.

Geometry of Cuts and Metrics

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Release : 2009-11-12
Genre : Mathematics
Kind : eBook
Book Rating : 953/5 ( reviews)

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Book Synopsis Geometry of Cuts and Metrics by : Michel Marie Deza

Download or read book Geometry of Cuts and Metrics written by Michel Marie Deza. This book was released on 2009-11-12. Available in PDF, EPUB and Kindle. Book excerpt: Cuts and metrics are well-known objects that arise - independently, but with many deep and fascinating connections - in diverse fields: in graph theory, combinatorial optimization, geometry of numbers, combinatorial matrix theory, statistical physics, VLSI design etc. This book presents a wealth of results, from different mathematical disciplines, in a unified comprehensive manner, and establishes new and old links, which cannot be found elsewhere. It provides a unique and invaluable source for researchers and graduate students. From the Reviews: "This book is definitely a milestone in the literature of integer programming and combinatorial optimization. It draws from the Interdisciplinarity of these fields [...]. With knowledge about the relevant terms, one can enjoy special subsections without being entirely familiar with the rest of the chapter. This makes it not only an interesting research book but even a dictionary. [...] The longer one works with it, the more beautiful it becomes." Optima 56, 1997.

Geometric Algorithms and Combinatorial Optimization

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Release : 2012-12-06
Genre : Mathematics
Kind : eBook
Book Rating : 819/5 ( reviews)

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Book Synopsis Geometric Algorithms and Combinatorial Optimization by : Martin Grötschel

Download or read book Geometric Algorithms and Combinatorial Optimization written by Martin Grötschel. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: Historically, there is a close connection between geometry and optImization. This is illustrated by methods like the gradient method and the simplex method, which are associated with clear geometric pictures. In combinatorial optimization, however, many of the strongest and most frequently used algorithms are based on the discrete structure of the problems: the greedy algorithm, shortest path and alternating path methods, branch-and-bound, etc. In the last several years geometric methods, in particular polyhedral combinatorics, have played a more and more profound role in combinatorial optimization as well. Our book discusses two recent geometric algorithms that have turned out to have particularly interesting consequences in combinatorial optimization, at least from a theoretical point of view. These algorithms are able to utilize the rich body of results in polyhedral combinatorics. The first of these algorithms is the ellipsoid method, developed for nonlinear programming by N. Z. Shor, D. B. Yudin, and A. S. NemirovskiI. It was a great surprise when L. G. Khachiyan showed that this method can be adapted to solve linear programs in polynomial time, thus solving an important open theoretical problem. While the ellipsoid method has not proved to be competitive with the simplex method in practice, it does have some features which make it particularly suited for the purposes of combinatorial optimization. The second algorithm we discuss finds its roots in the classical "geometry of numbers", developed by Minkowski. This method has had traditionally deep applications in number theory, in particular in diophantine approximation.

Handbook of Discrete and Computational Geometry

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Release : 2017-11-22
Genre : Computers
Kind : eBook
Book Rating : 421/5 ( reviews)

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Book Synopsis Handbook of Discrete and Computational Geometry by : Csaba D. Toth

Download or read book Handbook of Discrete and Computational Geometry written by Csaba D. Toth. This book was released on 2017-11-22. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Discrete and Computational Geometry is intended as a reference book fully accessible to nonspecialists as well as specialists, covering all major aspects of both fields. The book offers the most important results and methods in discrete and computational geometry to those who use them in their work, both in the academic world—as researchers in mathematics and computer science—and in the professional world—as practitioners in fields as diverse as operations research, molecular biology, and robotics. Discrete geometry has contributed significantly to the growth of discrete mathematics in recent years. This has been fueled partly by the advent of powerful computers and by the recent explosion of activity in the relatively young field of computational geometry. This synthesis between discrete and computational geometry lies at the heart of this Handbook. A growing list of application fields includes combinatorial optimization, computer-aided design, computer graphics, crystallography, data analysis, error-correcting codes, geographic information systems, motion planning, operations research, pattern recognition, robotics, solid modeling, and tomography.

Geometric Algorithms and Combinatorial Optimization

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Author :
Release : 2012-12-06
Genre : Mathematics
Kind : eBook
Book Rating : 40X/5 ( reviews)

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Book Synopsis Geometric Algorithms and Combinatorial Optimization by : Martin Grötschel

Download or read book Geometric Algorithms and Combinatorial Optimization written by Martin Grötschel. This book was released on 2012-12-06. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of the first edition of our book, geometric algorithms and combinatorial optimization have kept growing at the same fast pace as before. Nevertheless, we do not feel that the ongoing research has made this book outdated. Rather, it seems that many of the new results build on the models, algorithms, and theorems presented here. For instance, the celebrated Dyer-Frieze-Kannan algorithm for approximating the volume of a convex body is based on the oracle model of convex bodies and uses the ellipsoid method as a preprocessing technique. The polynomial time equivalence of optimization, separation, and membership has become a commonly employed tool in the study of the complexity of combinatorial optimization problems and in the newly developing field of computational convexity. Implementations of the basis reduction algorithm can be found in various computer algebra software systems. On the other hand, several of the open problems discussed in the first edition are still unsolved. For example, there are still no combinatorial polynomial time algorithms known for minimizing a submodular function or finding a maximum clique in a perfect graph. Moreover, despite the success of the interior point methods for the solution of explicitly given linear programs there is still no method known that solves implicitly given linear programs, such as those described in this book, and that is both practically and theoretically efficient. In particular, it is not known how to adapt interior point methods to such linear programs.

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