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Christoph Helmberg Vis

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*2008
16EEFrank Fischer, Christoph Helmberg, Jürgen Janßen, Boris Krostitz: Towards Solving Very Large Scale Train Timetabling Problems by Lagrangian Relaxation. ATMOS 2008
15EEMichael Armbruster, Marzena Fügenschuh, Christoph Helmberg, Alexander Martin: A Comparative Study of Linear and Semidefinite Branch-and-Cut Methods for Solving the Minimum Graph Bisection Problem. IPCO 2008: 112-124
2007
14EEChristoph Helmberg, Stefan Röhl: A Case Study of Joint Online Truck Scheduling and Inventory Management for Multiple Warehouses. Operations Research 55(4): 733-752 (2007)
2006
13EEMichael Armbruster, Marzena Fügenschuh, Christoph Helmberg, Nikolay Jetchev, Alexander Martin: Hybrid Genetic Algorithm Within Branch-and-Cut for the Minimum Graph Bisection Problem. EvoCOP 2006: 1-12
12EEFrank Göring, Christoph Helmberg, Markus Wappler: The rotational Dimension of a graph. Electronic Notes in Discrete Mathematics 27: 37-38 (2006)
2005
11EEMichael Armbruster, Marzena Fügenschuh, Christoph Helmberg, Nikolay Jetchev, Alexander Martin: LP-based Genetic Algorithm for the Minimum Graph Bisection Problem. OR 2005: 315-320
2003
10EEChristoph Helmberg: Numerical evaluation of SBmethod. Math. Program. 95(2): 381-406 (2003)
2000
9 Christoph Helmberg, Franz Rendl, Robert Weismantel: A Semidefinite Programming Approach to the Quadratic Knapsack Problem. J. Comb. Optim. 4(2): 197-215 (2000)
1999
8EEChristoph Helmberg: The m-Cost ATSP. IPCO 1999: 242-258
1998
7EEChristoph Helmberg, Krzysztof C. Kiwiel, Franz Rendl: Incorporating Inequality Constraints in the Spectral Bundle Method. IPCO 1998: 423-436
1997
6EEChristoph Helmberg: Fixing Variables in Semidefinite Relaxations. ESA 1997: 259-270
1996
5EEChristoph Helmberg, Franz Rendl, Robert Weismantel: Quadratic Knapsack Relaxations Using Cutting Planes. IPCO 1996: 175-189
1995
4EEChristoph Helmberg, Svatopluk Poljak, Franz Rendl, Henry Wolkowicz: Combining Semidefinite and Polyhedral Relaxations for Integer Programs. IPCO 1995: 124-134
1994
3EEDieter W. Fellner, Christoph Helmberg: Best approximate general ellipses on integer grids. Computers & Graphics 18(2): 143-151 (1994)
1993
2 Christoph Helmberg, Bojan Mohar, Svatopluk Poljak, Franz Rendl: A spectral approach to bandwidth and separator problems in graphs. IPCO 1993: 183-194
1EEDieter W. Fellner, Christoph Helmberg: Robust Rendering of General Ellipses and Elliptical Arcs. ACM Trans. Graph. 12(3): 251-276 (1993)

Coauthor Index

1Michael Armbruster [11] [13] [15]
2Dieter W. Fellner [1] [3]
3Frank Fischer [16]
4Marzena Fügenschuh [11] [13] [15]
5Frank Göring [12]
6Jürgen Janßen [16]
7Nikolay Jetchev [11] [13]
8Krzysztof C. Kiwiel [7]
9Boris Krostitz [16]
10Alexander Martin [11] [13] [15]
11Bojan Mohar [2]
12Svatopluk Poljak [2] [4]
13Franz Rendl [2] [4] [5] [7] [9]
14Stefan Röhl [14]
15Markus Wappler [12]
16Robert Weismantel [5] [9]
17Henry Wolkowicz [4]

Colors in the list of coauthors

Copyright © Tue Nov 3 08:52:44 2009 by Michael Ley (ley@uni-trier.de)