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    ATMOS
    2007
    129views Optimization» more  ATMOS 2007»
    Solving a Real-World Train Unit Assignment Problem
    13 years 5 months ago
    Solving a Real-World Train Unit Assignment Problem
    Download  drops.dagstuhl.de
    We face a real-world train unit assignment problem for an operator running trains in a regional area. Given a set of timetabled train trips, each with a required number of passenge...
    Valentina Cacchiani, Alberto Caprara, Paolo Toth
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    ATMOS
    2007
    94views Optimization» more  ATMOS 2007»
    Maintenance of Multi-level Overlay Graphs for Timetable Queries
    13 years 5 months ago
    Maintenance of Multi-level Overlay Graphs for Timetable Queries
    Download  drops.dagstuhl.de
    In railways systems the timetable is typically represented as a weighted digraph on which itinerary queries are answered by shortest path algorithms, usually running Dijkstra’s a...
    Francesco Bruera, Serafino Cicerone, Gianlorenzo D...
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    ATMOS
    2007
    119views Optimization» more  ATMOS 2007»
    Models for Railway Track Allocation
    13 years 5 months ago
    Models for Railway Track Allocation
    Download  drops.dagstuhl.de
    The optimal track allocation problem (OPTRA) is to find, in a given railway network, a conflict free set of train routes of maximum value. We study two types of integer programmi...
    Ralf Borndörfer, Thomas Schlechte
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    ATMOS
    2007
    84views Optimization» more  ATMOS 2007»
    Experimental Study on Speed-Up Techniques for Timetable Information Systems
    13 years 5 months ago
    Experimental Study on Speed-Up Techniques for Timetable Information Systems
    Download  www.math.tu-berlin.de
    Reinhard Bauer, Daniel Delling, Dorothea Wagner
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    ATMOS
    2007
    183views Optimization» more  ATMOS 2007»
    Solving Large Scale Crew Scheduling Problems by using Iterative Partitioning
    13 years 5 months ago
    Solving Large Scale Crew Scheduling Problems by using Iterative Partitioning
    Download  drops.dagstuhl.de
    This paper deals with large-scale crew scheduling problems arising at the Dutch railway operator, Netherlands Railways (NS). We discuss several methods to partition large instances...
    Erwin J. W. Abbink, Joel Van't Wout, Dennis Huisma...
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    ATMOS
    2007
    124views Optimization» more  ATMOS 2007»
    A Simulation/Optimization Framework for Locomotive Planning
    13 years 5 months ago
    A Simulation/Optimization Framework for Locomotive Planning
    Download  plaza.ufl.edu
    Abstract. In this paper, we give an overview of the Locomotive Simulater/Optimizer (LSO) decision support system developed by us for railroads. This software is designed to imitate...
    Artyom G. Nahapetyan, Ravindra K. Ahuja, F. Zeynep...
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