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    ATMOS
    2008
    101views Optimization» more  ATMOS 2008»
    Robust Line Planning under Unknown Incentives and Elasticity of Frequencies
    13 years 10 months ago
    Robust Line Planning under Unknown Incentives and Elasticity of Frequencies
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    The problem of robust line planning requests for a set of origin-destination paths (lines) along with their traffic rates (frequencies) in an underlying railway network infrastruct...
    Spyros C. Kontogiannis, Christos D. Zaroliagis
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    ATMOS
    2007
    129views Optimization» more  ATMOS 2007»
    Solving a Real-World Train Unit Assignment Problem
    13 years 10 months ago
    Solving a Real-World Train Unit Assignment Problem
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    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
    2008
    92views Optimization» more  ATMOS 2008»
    Towards Solving Very Large Scale Train Timetabling Problems by Lagrangian Relaxation
    13 years 10 months ago
    Towards Solving Very Large Scale Train Timetabling Problems by Lagrangian Relaxation
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    Frank Fischer, Christoph Helmberg, Jürgen Jan...
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    ATMOS
    2007
    94views Optimization» more  ATMOS 2007»
    Maintenance of Multi-level Overlay Graphs for Timetable Queries
    13 years 10 months ago
    Maintenance of Multi-level Overlay Graphs for Timetable Queries
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    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
    2008
    112views Optimization» more  ATMOS 2008»
    Dynamic Algorithms for Recoverable Robustness Problems
    13 years 10 months ago
    Dynamic Algorithms for Recoverable Robustness Problems
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    Abstract. Recently, the recoverable robustness model has been introduced in the optimization area. This model allows to consider disruptions (input data changes) in a unified way, ...
    Serafino Cicerone, Gabriele Di Stefano, Michael Sc...
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    ATMOS
    2007
    119views Optimization» more  ATMOS 2007»
    Models for Railway Track Allocation
    13 years 10 months ago
    Models for Railway Track Allocation
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    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
    2008
    103views Optimization» more  ATMOS 2008»
    IP-based Techniques for Delay Management with Priority Decisions
    13 years 10 months ago
    IP-based Techniques for Delay Management with Priority Decisions
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    Delay management is an important issue in the daily operations of any railway company. The task is to update the planned timetable to a disposition timetable in such a way that the...
    Michael Schachtebeck, Anita Schöbel
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    ATMOS
    2007
    84views Optimization» more  ATMOS 2007»
    Experimental Study on Speed-Up Techniques for Timetable Information Systems
    13 years 10 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
    2008
    118views Optimization» more  ATMOS 2008»
    Recoverable Robustness for Railway Rolling Stock Planning
    13 years 10 months ago
    Recoverable Robustness for Railway Rolling Stock Planning
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    Abstract. In this paper we explore the possibility of applying the notions of Recoverable Robustness and Price of Recoverability (introduced by [5]) to railway rolling stock planni...
    Valentina Cacchiani, Alberto Caprara, Laura Galli,...
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    ATMOS
    2008
    82views Optimization» more  ATMOS 2008»
    Line Planning on Paths and Tree Networks with Applications to the Quito Trolebús System
    13 years 10 months ago
    Line Planning on Paths and Tree Networks with Applications to the Quito Trolebús System
    Download  opus.kobv.de
    Luis M. Torres, Ramiro Torres, Ralf Borndörfe...
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