Christian Liebchen - researchr alias

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2011

Special issue of ::::Networks:::: on optimization in scheduled transportation networksRavindra K. Ahuja, Christian Liebchen. networks, 57(1):1-2, 2011. [doi]

2010

Computing delay resistant railway timetablesChristian Liebchen, Michael Schachtebeck, Anita Schöbel, Sebastian Stiller, André Prigge. cor, 37(5):857-868, 2010. [doi]

2009

Cycle bases in graphs characterization, algorithms, complexity, and applicationsTelikepalli Kavitha, Christian Liebchen, Kurt Mehlhorn, Dimitrios Michail, Romeo Rizzi, Torsten Ueckerdt, Katharina Anna Zweig. csr, 3(4):199-243, 2009. [doi]

Lower bounds for strictly fundamental cycle bases in grid graphsEkkehard Köhler, Christian Liebchen, Gregor Wünsch, Romeo Rizzi. networks, 53(2):191-205, 2009. [doi]

Integral cycle bases for cyclic timetablingChristian Liebchen, Leon Peeters. disopt, 6(1):98-109, 2009. [doi]

The Concept of Recoverable Robustness, Linear Programming Recovery, and Railway ApplicationsChristian Liebchen, Marco E. LÃ¼bbecke, Rolf H. MÃ¶hring, Sebastian Stiller. In Ravindra K. Ahuja, Rolf H. MÃ¶hring, Christos D. Zaroliagis, editors, Robust and Online Large-Scale Optimization: Models and Techniques for Transportation Systems. Volume 5868 of Lecture Notes in Computer Science, pages 1-27, Springer, 2009. [doi]

2008

The zoo of tree spanner problemsChristian Liebchen, Gregor Wünsch. DAM, 156(5):569-587, 2008. [doi]

The Second Chvatal Closure Can Yield Better Railway TimetablesChristian Liebchen, Elmar Swarat. patmos 2008: [doi]

The First Optimized Railway Timetable in PracticeChristian Liebchen. transci, 42(4):420-435, 2008. [doi]

2007

ATMOS 2007 Abstracts Collection - 7th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and SystemsRavindra K. Ahuja, Christian Liebchen, Juan A. Mesa. atmos 2007: [doi]

ATMOS 2007 Preface - 7th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and SystemsRavindra K. Ahuja, Christian Liebchen, Juan A. Mesa. atmos 2007: [doi]

When Periodic Timetables Are SuboptimalRalf Borndörfer, Christian Liebchen. or 2008: 449-454 [doi]

New length bounds for cycle basesMichael Elkin, Christian Liebchen, Romeo Rizzi. ipl, 104(5):186-193, 2007. [doi]

Benchmarks for Strictly Fundamental Cycle BasesChristian Liebchen, Gregor Wünsch, Ekkehard Köhler, Alexander Reich, Romeo Rizzi. wea 2007: 365-378 [doi]

Classes of cycle basesChristian Liebchen, Romeo Rizzi. DAM, 155(3):337-355, 2007. [doi]

ATMOS 2007 - 7th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems, November 15-16, 2007, Sevilla, SpainChristian Liebchen, Ravindra K. Ahuja, Juan A. Mesa, editors, Volume 07001 of Dagstuhl Seminar Proceedings, Internationales Begegnungs- und Forschungszentrum fuer Informatik (IBFI), Schloss Dagstuhl, Germany, 2007.

2006

Periodic Timetable Optimization in Public TransportChristian Liebchen. or 2007: 29-36 [doi]

2005

A Cut-Based Heuristic to Produce Almost Feasible Periodic Railway TimetablesChristian Liebchen. wea 2005: 354-366 [doi]

A greedy approach to compute a minimum cycle basis of a directed graphChristian Liebchen, Romeo Rizzi. ipl, 94(3):107-112, 2005. [doi]

2004

Symmetry for Periodic Railway TimetablesChristian Liebchen. ENTCS, 92:34-51, 2004. [doi]

The Modeling Power of the Periodic Event Scheduling Problem: Railway Timetables - and BeyondChristian Liebchen, Rolf H. Möhring. patmos 2007: 3-40 [doi]

2003

Finding Short Integral Cycle Bases for Cyclic TimetablingChristian Liebchen. esa 2003: 715-726 [doi]

2002

A Case Study in Periodic TimetablingChristian Liebchen, Rolf H. Möhring. ENTCS, 66(6), 2002. [doi]