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Publikationen

Disser, Yann and Klimm, Max and Lübbecke, Elisabeth
Scheduling Bidirectional Traffic on a Path.
In Proceedings of the 42nd International Colloquium on Automata, Languages, and Programming (ICALP), pp. 406-418, 2015.  [pdf]


Günther, Elisabeth and König, Felix G. and Megow, Nicole
Scheduling and Packing Malleable and Parallel Tasks with Precedence Constraints of Bounded Width.
Journal of Combinatorial Optimization, Vol. 27, pp. 164-181, 2014.  [pdf]


Günther, Elisabeth and Maurer, Olaf and Megow, Nicole and Wiese, Andreas
A New Approach to Online Scheduling: Approximating the Optimal Competitive Ratio.
In Proceedings of the 24st Annual ACM-SIAM Symposium on Discrete Algorithms (SODA 2013), pp. 118-128, 2013.  [pdf]


Günther, Elisabeth and König, Felix G. and Megow, Nicole
Scheduling and Packing Malleable Tasks with Precedence Constraints of Bounded Width.
In Approximation and Online Algorithms: 7th International Workshop, WAOA 2009, Lecture Notes in Computer Science, Vol. 5893, pp. 170-181, Springer, 2010.  [pdf]


Technical Reports

Lübbecke, Elisabeth and Lübbecke, Marco E. and Möhring, Rolf H.
Ship Traffic Optimization for the Kiel Canal.
Preprint 4681, Optimization Online, 2014.


Scheduling and Packing Malleable Tasks with Precedence Constraints of Bounded Width
Zitatschlüssel Report-020-2009
Autor Günther, Elisabeth and König, Felix G. and Megow, Nicole
Jahr 2009
Nummer 020
Monat jun
Notiz Approximation and Online Algorithms: 7th International Workshop, WAOA 2009, to appear as a volume of Lecture Notes in Computer Science, Springer-Verlag, 2009.
Institution Technische Universität Berlin, Institut für Mathematik
Zusammenfassung We study two related problems in non-preemptive scheduling and packing of malleable tasks with precedence constraints to minimize the makespan. We distinguish the scheduling variant, in which we allow the free choice of processors, and the packing variant, in which a task must be assigned to a contiguous subset of processors. For precedence constraints of bounded width, we completely resolve the complexity status for any particular problem setting concerning width bound and number of processors, and give polynomial-time algorithms with best possible performance. For both, scheduling and packing malleable tasks, we present an FPTAS for the NP-hard problem variants and exact algorithms for all remaining special cases. To obtain the positive results, we do not require the common monotonous penalty assumption on processing times, whereas our hardness results hold even when assuming this restriction. With the close relation between contiguous scheduling and strip packing, our FPTAS is the first (and best possible) constant factor approximation for (malleable) strip packing under special precedence constraints.
Typ der Publikation Preprint
Link zur Publikation Download Bibtex Eintrag

Extended Abstracts

Günther, Elisabeth and Lübbecke, Marco E. and Möhring, Rolf H.
Challenges in Scheduling when Planning the Ship Traffic on the Kiel Canal.
In Proceedings of the 10th Workshop on Models and Algorithms for Planning and Scheduling Problems (MAPSP 2011), 2011.  [pdf]


Günther, Elisabeth and Lübbecke, Marco E. and Möhring, Rolf H.
Ship Traffic Optimization for the Kiel Canal.
In Proceedings of the Seventh Triennial Symposium on Transportation Analysis (TRISTAN 2010), 2010.  [pdf]


Günther, Elisabeth and König, Felix G. and Megow, Nicole
The Bin Scheduling Problem.
In Proceedings of the 9th Workshop on Models and Algorithms for Planning and Scheduling Problems (MAPSP 2009), 2009.  [pdf]


Diplomarbeit

Günther, Elisabeth
Bin Scheduling: Partitionieren verformbarer Jobs mit Nebenbedingungen.
Diplomarbeit, Technische Universität Berlin, Deutschland, December 2008.
(Ausgezeichnet mit einem 3. Clara von Simson-Preis 2009)

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