Angebote zu "Approximation" (9 Treffer)

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Approximation Algorithms
51,99 € *
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Approximation algorithms are currently a central and fast-developing area of research in theoretical computer science. This monograph covers the basic techniques used in the latest research work, techniques that everyone in the field should know, and shows that they form the beginnings of a promising theory. The author consolidates progress made so far, including some very recent results, and makes a strong effort to convey the beauty and excitement of work in the field. He gives clear, lucid explanations of key results and ideas, with intuitive proofs, he writes algorithms in simple English to make them easy to understand, and he provides critical examples and numerous illustrations to help in elucidating the algorithms. Many of the results presented have been simplified and new insights provided. The book will interest theoretical computer scientists, operations researchers, and discrete mathematicians.

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Konkrete Analysis
32,99 € *
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Dieses Lehrbuch führt den Leser in konkrete Techniken und Begriffe der Analysis ein, mit deren Hilfe sich komplexe quantitative Zusammenhänge vereinfachen und verstehen lassen. Es richtet sich in erster Linie an Studierende der Informatik, ist aber auch für Studierende der Mathematik und Physik mit Interesse an diskreten Strukturen eine willkommene ergänzende Einführung in so grundlegende analytische Werkzeuge wie Abschätzung, Approximation und Asymptotik. Besonderheiten der Darstellung sind (a) die Betonung von Ideenbildung und Argumentationshierarchien (von der Graphik zum Beweis), (b) der Einsatz von Computeralgebra-Systemen für rein kalkulatorische Aufgaben, (c) das wiederholte Aufgreifen von Beispielen mit verfeinerten Techniken und veränderten Blickwinkeln und (d) die Motivation anhand von Problemen aus der Informatik. Das Buch wird von einer hyperverlinkten PDF-Version begleitet, die Verweise auf Begriffserklärungen, biografische Daten und weiterführendes Material enthält.

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Funktionale Programmierung
32,99 € *
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Gegenstand dieses Werkes sind die Theorie und Praxis der modernen funktionalen Programmierung. Dabei betrachten die Autoren aber nicht nur das, was mittels der heute implementierten Sprachen wie HASKELL, OPAL, ML usw. machbar ist, sondern weisen auch auf aktuelle Entwicklungen hin. Zum einen werden fortgeschrittene Programmiertechniken vorgestellt, wie z.B. die Verwendung unendlicher Datenstrukturen, Parser als Funktionen höherer Ordnung, Approximations-Algorithmen, Lösung von Gleichungssystemen usw. Zum anderen werden aber auch Sprachkonzepte diskutiert, wie z.B. eine systematische Form der Modularisierung oder besonders ausdrucksstarke und flexible Formen der Typisierung. Ein besonderes Gewicht wird generell auf die Integration verschiedener Paradigmen gelegt, wie etwa die Verbindung mit Konzepten der objektorientierten, der nebenläufigen oder der Constraint-basierten Programmierung. In diesem Zusammenhang wird speziell auch die Bedeutung von Monaden analysiert und kritisch hinterfragt.

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Spectral Methods
104,99 € *
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Spectral methods, particularly in their multidomain version, have become firmly established as a mainstream tool for scientific and engineering computation. While retaining the tight integration between the theoretical and practical aspects of spectral methods that was the hallmark of their 1988 book, Canuto et al. now incorporate the many improvements in the algorithms and the theory of spectral methods that have been made since then. This second new treatment, Evolution to Complex Geometries and Applications to Fluid Dynamics, provides an extensive overview of the essential algorithmic and theoretical aspects of spectral methods for complex geometries, in addition to detailed discussions of spectral algorithms for fluid dynamics in simple and complex geometries. Modern strategies for constructing spectral approximations in complex domains, such as spectral elements, mortar elements, and discontinuous Galerkin methods, as well as patching collocation, are introduced, analyzed, and demonstrated by means of numerous numerical examples. Representative simulations from continuum mechanics are also shown. Efficient domain decomposition preconditioners (of both Schwarz and Schur type) that are amenable to parallel implementation are surveyed. The discussion of spectral algorithms for fluid dynamics in single domains focuses on proven algorithms for the boundary-layer equations, linear and nonlinear stability analyses, incompressible Navier-Stokes problems, and both inviscid and viscous compressible flows. An overview of the modern approach to computing incompressible flows in general geometries using high-order, spectral discretizations is also provided. The recent companion book Fundamentals in Single Domains discusses the fundamentals of the approximation of solutions to ordinary and partial differential equations on single domains by expansions in smooth, global basis functions. The essential concepts and formulas from this book are included in the current text for the reader s convenience.

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Algorithmics for Hard Problems
66,99 € *
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Algorithmic design, especially for hard problems, is more essential for success in solving them than any standard improvement of current computer tech nologies. Because of this, the design of algorithms for solving hard problems is the core of current algorithmic research from the theoretical point of view as well as from the practical point of view. There are many general text books on algorithmics, and several specialized books devoted to particular approaches such as local search, randomization, approximation algorithms, or heuristics. But there is no textbook that focuses on the design of algorithms for hard computing tasks, and that systematically explains, combines, and compares the main possibilities for attacking hard algorithmic problems. As this topic is fundamental for computer science, this book tries to close this gap. Another motivation, and probably the main reason for writing this book, is connected to education. The considered area has developed very dynami cally in recent years and the research on this topic discovered several profound results, new concepts, and new methods. Some of the achieved contributions are so fundamental that one can speak about paradigms which should be in cluded in the education of every computer science student. Unfortunately, this is very far from reality. This is because these paradigms are not sufficiently known in the computer science community, and so they are insufficiently com municated to students and practitioners.

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Information Theory, Inference and Learning Algo...
48,99 € *
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Information theory and inference, taught together in this exciting textbook, lie at the heart of many important areas of modern technology - communication, signal processing, data mining, machine learning, pattern recognition, computational neuroscience, bioinformatics and cryptography. The book introduces theory in tandem with applications. Information theory is taught alongside practical communication systems such as arithmetic coding for data compression and sparse-graph codes for error-correction. Inference techniques, including message-passing algorithms, Monte Carlo methods and variational approximations, are developed alongside applications to clustering, convolutional codes, independent component analysis, and neural networks. Uniquely, the book covers state-of-the-art error-correcting codes, including low-density-parity-check codes, turbo codes, and digital fountain codes - the twenty-first-century standards for satellite communications, disk drives, and data broadcast. Richly illustrated, filled with worked examples and over 400 exercises, some with detailed solutions, the book is ideal for self-learning, and for undergraduate or graduate courses. It also provides an unparalleled entry point for professionals in areas as diverse as computational biology, financial engineering and machine learning.

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Graph Drawing
87,99 € *
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The 12th International Symposium on Graph Drawing (GD 2004)was held d- ing September 29 October 2, 2004, at City College, CUNY, in the heart of Harlem, New York City. GD 2004 attracted 94 participants from 19 countries. In response to the call for papers, the program committee received 86 re- larsubmissionsdescribingoriginalresearchand/orsystemdemonstrations.Each submissionwasreviewedbyatleastthreeprogramcommitteemembersandc- ments were returned to the authors. Following extensive e-mail discussions, the program committee accepted 39 long papers (11 pages each in the proceedings) and 12 short papers (6 pages each). In addition, 4 posters were displayed and discussed in the conference exhibition room (2 pages each in the proceedings). Theprogramcommittee ofGD 2004invitedtwo distinguishedlecturers.P- fessorPaulSeymourfromPrincetonUniversitypresenteda newcharacterization ofclaw-freegraphs(jointworkwithMariaChudnovsky).ProfessorErikDemaine from MIT reported on his joint work with Fedor Fomin, MohammadTaghi - jiaghayi and Dimitrios Thilikos, concerning fast (often subexponential) ?x- parameter algorithms and polynomial approximation schemes for broad classes of NP-hard problems in topological graph theory. A survey of the subject by Professors Demaine and Hajiaghayi is included in this volume. As usual, the annual graph drawing contest was held during the conference. This time the contest had two distinct tracks: the graph drawing challenge and the freestyle contest. A report is included in the proceedings.

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Introduction to MATLAB for Engineers and Scient...
19,99 € *
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Familiarize yourself with MATLAB using this concise, practical tutorial that is focused on writing code to learn concepts. Starting from the basics, this book covers array-based computing, plotting and working with files, numerical computation formalism, and the primary concepts of approximations. Introduction to MATLAB is useful for industry engineers, researchers, and students who are looking for open-source solutions for numerical computation. In this book you will learn by doing, avoiding technical jargon, which makes the concepts easy to learn. First you´ll see how to run basic calculations, absorbing technical complexities incrementally as you progress toward advanced topics. Throughout, the language is kept simple to ensure that readers at all levels can grasp the concepts. What You´ll Learn Apply sample code to your engineering or science problems Work with MATLAB arrays, functions, and loops Use MATLAB´s plotting functions for data visualization Solve numerical computing and computational engineering problems with a MATLAB case study Who This Book Is For Engineers, scientists, researchers, and students who are new to MATLAB. Some prior programming experience would be helpful but not required.

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Signaltheorie
37,99 € *
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Das vorliegende Lehrbuch gibt einen systematischen Einstieg in die Signaltheorie und behandelt sowohl die in der Ingenieur-Literatur üblichen Werkzeuge zur Signal- und Systembeschreibung als auch die grundlegenden mathematischen Konzepte zur Interpretation von Signalen als Elemente von Vektorräumen und zur Signal-Approximation. Der Inhalt reicht von klassischen Transformationen über Wavelet-Transformationen und nichtlineare Zeit-Frequenz-Analyseverfahren bis hin zu optimalen Transformationen für zufällige Signale. Die Methoden werden dabei anhand zahlreicher Anwendungsbeispiele aus den Bereichen der Informationsverarbeitung, Signalkompression, Spektralanalyse, Störgeräuschreduktion und Parameterschätzung illustriert. Der Inhalt Signale und Signalräume - Prinzipien der Signaltransformation - Kontinuierliche und diskrete Signale und Systeme - Ausgewählte diskrete Transformationen - Charakterisierung und Transformation zufälliger Prozesse - Filterbänke - Kurzzeit-Fourier-Transformation - Wavelet-Transformation - Nichtlineare Zeit-Frequenz-Verteilungen - Parameter- und Signalschätzung - Mehrkanalige Systeme Die Zielgruppe Studierende der Fachrichtungen Elektrotechnik, Informationstechnik und Informatik an Universitäten Forscher und Entwickler im Bereich der Signalverarbeitung Der Autor Prof. Dr.-Ing. Alfred Mertins ist Direktor des Instituts für Signalverarbeitung an der Universität zu Lübeck.

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