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  • 1
    Online Resource
    Online Resource
    Cham :Springer International Publishing AG,
    Keywords: Electronic data processing. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (207 pages)
    Edition: 1st ed.
    ISBN: 9783319076447
    Series Statement: Lecture Notes in Computer Science Series ; v.8457
    DDC: 006.3
    Language: English
    Note: Intro -- Preface -- Organization -- Table of Contents -- A CP/LNS Approach for Multi-day Homecare Scheduling Problems -- 1 Introduction -- 1.1 Related Work -- 2 A Constraint Model for Homecare Activity Scheduling -- 2.1 Variables -- 2.2 Constraints -- 2.3 Branching Strategy -- 3 Hybrid Approach -- 4 Experimental Analysis -- 5 Conclusions and Future Work -- References -- A Hybrid Metaheuristic to Solve the Resource Allocation Problem in Bike Sharing Systems -- 1 Logistical Challenges in Bike Sharing Systems -- 2 Related Literature -- 3 The Resource Allocation Problem -- 4 The Hybrid Metaheuristic -- 5 Computational Study -- 6 Conclusions and Outlook -- References -- Algorithm Comparison by Automatically Configurable Stochastic Local Search Frameworks: A Case Study Using Flow-Shop Scheduling Problems -- 1 Introduction -- 2 Framework -- 3 The Permutation Flowshop Problem -- 3.1 Problem-Specific Components for the PFSP -- 4 Experimental Evaluation -- 4.1 Experimental Setup -- 4.2 Experimental Results for PFSP-WCT -- 4.3 Experimental Results for PFSP-WT -- 5 Discussion and Conclusions -- References -- A Local Search Approach for Binary Programming: Feasibility Search -- 1 Introduction -- 2 Related Works -- 3 TheBPLocalSearchSolver -- 3.1 Conflict Graphs -- 3.2 Constructive Approach -- 3.3 Local Search : Chains of Flips -- 4 Computational Experiments -- 5 Conclusions -- References -- A Partition-Based Heuristic for the Steiner Tree Problem in Large Graphs -- 1 Introduction -- 2 Partition-Based Construction Heuristic -- 2.1 Step 1: Partition -- 2.2 Step 2: Decompose -- 2.3 Step 3: Solve -- 2.4 Step 4: Repair -- 3 Partition-Based Memetic Algorithm -- 4 Computational Results -- 4.1 Evaluation of the Partitioning Algorithms -- 4.2 Comparison to Other Methods -- 5 Conclusions -- References. , A Path-Generation Matheuristic for Large Scale Evacuation Planning -- 1 Introduction -- 2 Problem Formulation -- 3 Related Work -- 4 Proposed Approaches -- 4.1 Master Problem -- 4.2 Subproblem -- 5 Computational Experiments -- 6 Conclusions -- References -- A Variable Neighborhood Search Using Very Large Neighborhood Structures for the 3-Staged 2-Dimensional Cutting Stock Problem -- 1 Introduction -- 2 Problem Definition -- 2.1 Solution Representation -- 3 Related Work -- 4 Variable Neighborhood Search -- 4.1 Construction Heuristics -- 4.2 Neighborhood Structures and Search -- 5 ILP-Based Very Large Neighborhood Search -- 5.1 An ILP for Packing Strips -- 5.2 Determining Strip Dimensions -- 6 Experimental Results -- 7 Conclusions -- References -- Cooperative Parallel Decomposition Guided VNS for Solving Weighted CSP -- 1 Introduction -- 2 Context and Definitions -- 2.1 Weighted CSP -- 2.2 Tree Decomposition -- 2.3 Decomposition Guided -- 3 Parallel -- 3.1 Asynchronous Master-Slave Architecture for -- 3.2 Master Algorithm -- 3.3 Slave Algorithm -- 4 Benchmark Problems -- 5 Experiments -- 5.1 Experimental Protocol -- 5.2 Contribution of the Parallelization -- 6 Conclusions -- References -- GeNePi: A Multi-Objective Machine Reassignment Algorithm for Data Centres -- 1 Introduction -- 2 Problem Definition -- 2.1 Reassignment Problem -- 2.2 Objectives -- 3 Description of Our Solution: GeNePi -- 3.1 Ge: A Variant of the Constructive Phase of GRASP -- 3.2 Ne: NSGA-II -- 3.3 Pi: A Pareto Local Search -- 4 Evaluation -- 4.1 Experimental Setups -- 4.2 Metrics -- 4.3 Algorithms -- 4.4 Tuning the Steps of GeNePi -- 4.5 Results -- 5 Conclusion -- References -- Hybrids of Integer Programming and ACO for Resource Constrained Job Scheduling -- 1 Introduction -- 2 Problem Specification -- 3 An Integer Programming Formulation -- 4 Column Generation. , 5 Lagrangian Relaxation -- 5.1 The Lagrangian Heuristic -- 6 Ant Colony Optimisation -- 6.1 Variants of CG/LR and ACO Hybrids -- 7 Experiments and Results -- 7.1 Results -- 8 Conclusion -- References -- Iterative Probabilistic Tree Search for the Minimum Common String Partition Problem -- 1 Introduction -- 1.1 Problem Description -- 1.2 Related Work -- 1.3 Organization of the Paper -- 2 Proposed Algorithm -- 2.1 Preliminaries -- 2.2 Main Algorithm -- 3 Experimental Evaluation -- 3.1 Problem Instances -- 3.2 Algorithm Tuning -- 3.3 Numerical Results -- 4 Conclusions and Future Work -- References -- JAM: A Tabu-Based Two-Stage Simulated Annealing Algorithm for the Multidimensional Arrangement Problem -- 1 Introduction -- 1.1 Problem Definition -- 1.2 Related Work -- 1.3 Contributions -- 2 The Algorithm JAM -- 2.1 Notation -- 2.2 Overview of JAM -- 2.3 Elements of JAM -- 3 Evaluation of JAM -- 4 Conclusions -- References -- Online Performance Measures for Metaheuristic Optimization -- 1 Introduction -- 2 The Global Optimization Problem -- 2.1 Definitions -- 2.2 Practical Issues in Global Optimization -- 3 Our Contribution : Time Series Analysis for Performance Assessment of Metaheuristics -- 4 Applications of DFA for Metaheuristics -- 4.1 Differential Evolution (DE) as an Optimization Technique -- 4.2 Basin Hopping (BH) as an Optimization Technique -- 5 Experimental Results -- 5.1 DE - General Findings -- 5.2 DE - On-Line Performance Measure -- 5.3 DE - Online Adaption of Parameter Choices -- 5.4 BH - Results of DFA Analysis -- 6 Discussion -- References -- Speeding Up Logic-Based Benders' Decomposition by a Metaheuristic for a Bi-Level Capacitated Vehicle Routing Problem -- 1 Introduction -- 2 The Bi-Level Capacitated Vehicle Routing Problem with Time Limits -- 3 Related Work -- 4 MIP Model for 2L-VRP-TL. , 5 Logic-Based Benders' Decomposition for 2L-VRP-TL -- 6 Metaheuristic Improvements -- 6.1 Heuristic BD -- 7 Computational Experiments -- 7.1 Instances -- 7.2 Results -- 8 Conclusions -- References -- Author Index.
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  • 2
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online Ressource, 30 p. = 434 Kb, text and images , graphs
    Edition: [Elektronische Ressource]
    Series Statement: ZIB-Report / Konrad-Zuse-Zentrum für Informationstechnik Berlin 2000,37
    Language: English
    Note: Differences between the printed and electronic version of the document are possible , Also available as printed version , Systemvoraussetzungen: Acrobat Reader.
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  • 3
    Keywords: Forschungsbericht ; Kohlevergasung ; Kohlendioxid ; Emissionsverringerung ; Prototyp ; Prozess ; Technische Innovation ; Oxidation ; Flamme ; Wirbelschichtverfahren ; Vergasung
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (288 Seiten, 14,5 MB) , Illustrationen, Diagramme
    Language: German
    Note: Volltext: PDF , Förderkennzeichen BMWi 0327865 , Paralleltitel dem englischen Berichtsblatt entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Sprache der Zusammenfassung: Deutsch, Englisch
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  • 4
    Keywords: Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (104 Seiten = 7 MB) , Graphen, Karten
    Edition: 2021
    Language: German
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  • 5
    Online Resource
    Online Resource
    [Greifswald] : [Ernst-Moritz-Arndt-Univ., Inst. für Mathematik und Informatik]
    Keywords: Forschungsbericht ; Freie Halbgruppe
    Type of Medium: Online Resource
    Pages: Online-Ressource (PDF-Datei: 11 S., 176 KB)
    Series Statement: [Preprint-Reihe Mathematik / Institut für Mathematik und Informatik, Ernst-Moritz-Arndt-Universität Greifswald] [2007,15]
    Language: English
    Note: Literaturverz , Systemvoraussetzungen: Acrobat reader.
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 22 (2003), S. 0 
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: The multi-year sea ice (MY) concentration as determined with the NASA Team algorithm (NTA) shows an increase during winter. This unrealistic feature can be reduced using combined active and passive remote sensing data, leading to a more realistic estimation of MY area. Our joint analysis of SSM/I, QuikSCATterometer (QSCAT) and meteorological data reveals events (i.e. intervals in space and time) where increased surface roughness and volume scattering, after a melt-refreezing episode, alters the passive microwave signature of the undisturbed sea ice surface. In these events, the calculation of MY and FY areas employing the NTA leads to false estimations of their amounts. It is shown that when such events occur, QSCAT backscatter values increase by more than 3 dB. This backscatter variation can be easily detected and the FY and MY area determination of the NTA can be corrected accordingly within defined event-regions. Using this method, called Simultaneous NTA, we found that in May 2000 12% of the area detected by the NTA as MY has to be corrected to FY. As a consequence, a detailed reanalysis of the 20-year passive microwave data set is suggested to more precisely compute the MY area.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Algorithmica 7 (1992), S. 333-335 
    ISSN: 1432-0541
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    OR spectrum 17 (1995), S. 55-66 
    ISSN: 1436-6304
    Keywords: Local search ; simulated annealing ; tabu search ; genetic algorithms ; machine learning ; knowledge based information systems ; Lokale Suche ; Simulated Annealing ; Tabu Search ; Genetische Algorithmen ; Maschinelles Lernen ; Wissensbasierte Informationssysteme
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Description / Table of Contents: Zusammenfassung Aus drei Gründen stellen wir diesem Sonderheft „Applied Local Search“ ein erweitertes Vorwort voran. Erstens sollen die mittlerweile bereits als klassisch zu bezeichnenden Strukturen und Ideen von dem, was derzeit unter lokaler Suche verstanden wird, vorgestellt werden. Simulated Annealing, Tabu Search and Genetische Algorithmen werden somit in ihren Grandelementen beschrieben, wobei der Schwerpunkt bewußt auf Tabu Search liegt, das sich derzeit als beste Strategie zur Lösung kombinatorischer Optimierungsprobleme etabliert hat. Neuere und mittlerweile sehr erfolgreiche aber immer noch wenig bekannte Ideen, wie die Reverse Elimination Methode und Ejection Chains, werden ebenfalls im Rahmen von Tabu Search vorgestellt. Zweites Anliegen ist, die Einbettung von lokalen Suchverfahren in einem allgemeineren Kontext wissensbasierter Informationssysteme zu beschreiben. Lokale Suche wird dabei als ein Paradigma maschinellen Lernens betrachtet. Schließlich soll dieses Vorwort ebenfalls einen kurzen Überblick der in diesem Heft enthaltenen Arbeiten geben und sie aufgrund der Verfahren und Modelle gruppieren.
    Notes: Abstract The idea of this extended foreword to the special issue on applied local search is threefold. Firstly, we provide a brief and fundamental description of what is nowadays called local search. Components which have meanwhile become an integral part of the classical aspects on simulated annealing, tabu search and genetic algorithms are reviewed. Furthermore, today tabu search can be considered as the major pillar of local search. Hence, attention is drawn to a couple of tabu search issues more recently developed such as the reverse elimination method and ejection chains. Secondly, local search based knowledge engineering is developed to constitute a substantial part of knowledge based information systems. Within this general setting local search will be considered as one particular paradigm of machine learning. Thirdly, we are going to introduce what is considered to be the main subject of this issue, local search applications. We briefly embed the contents of the subsequent papers and group them with respect to their particular methods and models within the above mentioned framework.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    OR spectrum 15 (1993), S. 120-121 
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Annals of operations research 63 (1996), S. 253-275 
    ISSN: 1572-9338
    Keywords: Traveling purchaser problem ; heuristics ; tabu search
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract Tabu search is a metastrategy for guiding known heuristics to overcome local optimality with a large number of successful applications reported in the literature. In this paper we investigate two dynamic strategies, the reverse elimination method and the cancellation sequence method. The incorporation of strategic oscillation as well as a combination of these methods are developed. The impact of the different methods is shown with respect to the traveling purchaser problem, a generalization of the classical traveling salesman problem. The traveling purchaser problem is the problem of determining a tour of a purchaser buying several items in different shops by minimizing the total amount of travel and purchase costs. A comparison of the tabu search strategies with a simulated annealing approach is presented, too.
    Type of Medium: Electronic Resource
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