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ORCIDStephan Westphal
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2020 – today
- 2022
[j25]Ferdinand Bollwein
, Stephan Westphal:
Oblique decision tree induction by cross-entropy optimization based on the von Mises-Fisher distribution. Comput. Stat. 37(5): 2203-2229 (2022)- 2021
- [j24]Ferdinand Bollwein, Stephan Westphal:
A branch & bound algorithm to determine optimal bivariate splits for oblique decision tree induction. Appl. Intell. 51(10): 7552-7572 (2021) - [c11]Felix Merz, Christoph Schwindt, Stephan Westphal, Jürgen Zimmermann:
An Auction-based Mechanism for the Formation and Scheduling of Heterogeneous Human-machine Teams. IEEM 2021: 863-868 - 2020
- [j23]Ferdinand Bollwein, Martin Dahmen, Stephan Westphal:
A branch & bound algorithm to determine optimal cross-splits for decision tree induction. Ann. Math. Artif. Intell. 88(4): 291-311 (2020) - [j22]Basel Alhaji, Janine Beecken, Rüdiger Ehlers, Jan Gertheiss, Felix Merz, Jörg P. Müller, Michael Prilla, Andreas Rausch, Andreas Reinhardt, Delphine Reinhardt, Christian Rembe, Niels-Ole Rohweder, Christoph Schwindt, Stephan Westphal, Jürgen Zimmermann:
Engineering Human-Machine Teams for Trusted Collaboration. Big Data Cogn. Comput. 4(4): 35 (2020) - [c10]Felix Merz, Christoph Schwindt, Stephan Westphal, Jürgen Zimmermann:
A Multi-Round Auction for Staff to Job Assignment Under Myopic Best Response Dynamics. IEEM 2020: 1137-1141
2010 – 2019
- 2019
- [j21]Sven O. Krumke, Clemens Thielen, Philipp Weinschenk, Stephan Westphal:
Full implementation of social choice functions in dominant strategies. Int. J. Game Theory 48(1): 337-361 (2019) - [c9]Sînziana-Maria Sebe, Philipp Kraus, Jörg P. Müller, Stephan Westphal:
Cross-provider Platoons for Same-day Delivery. VEHITS 2019: 106-116 - 2017
- [j20]Marco Bender, Clemens Thielen, Stephan Westphal:
Online interval scheduling with a bounded number of failures. J. Sched. 20(5): 443-457 (2017) - 2016
- [j19]Marc Goerigk, Stephan Westphal:
A combined local search and integer programming approach to the traveling tournament problem. Ann. Oper. Res. 239(1): 343-354 (2016) - [j18]Clemens Thielen, Morten Tiedemann, Stephan Westphal:
The online knapsack problem with incremental capacity. Math. Methods Oper. Res. 83(2): 207-242 (2016) - [c8]Julia Zillies, Stephan Westphal, Dinesh Thakur, Vijay Kumar, George J. Pappas, David Scheidt:
A column generation approach for optimized routing and coordination of a UAV fleet. SSRR 2016: 350-357 - 2015
- [j17]Jonas Ide, Morten Tiedemann, Stephan Westphal, Felix Haiduk:
An application of deterministic and robust optimization in the wood cutting industry. 4OR 13(1): 35-57 (2015) - [j16]Marco Bender, Clemens Thielen, Stephan Westphal:
Packing items into several bins facilitates approximating the separable assignment problem. Inf. Process. Lett. 115(6-8): 570-575 (2015) - [j15]Marco Bender, Stephan Westphal:
An optimal randomized online algorithm for the k-Canadian Traveller Problem on node-disjoint paths. J. Comb. Optim. 30(1): 87-96 (2015) - 2014
- [j14]Stephan Westphal, Karl Noparlik:
A 5.875-approximation for the Traveling Tournament Problem. Ann. Oper. Res. 218(1): 347-360 (2014) - [j13]Stephan Westphal:
Scheduling the German Basketball League. Interfaces 44(5): 498-508 (2014) - [c7]Marc Goerigk, Richard Hoshino, Ken-ichi Kawarabayashi, Stephan Westphal:
Solving the Traveling Tournament Problem by Packing Three-Vertex Paths. AAAI 2014: 2271-2277 - [c6]Marco Bender, Stephan Westphal:
Maximum Generalized Assignment with Convex Costs. ISCO 2014: 75-86 - 2013
- [j12]Clemens Thielen, Stephan Westphal:
Complexity and approximability of the maximum flow problem with minimum quantities. Networks 62(2): 125-131 (2013) - [c5]Sven O. Krumke, Rob van Stee, Stephan Westphal:
Online Job Admission. Fundamental Problems in Computing 2013: 435-454 - [c4]Marco Bender, Clemens Thielen, Stephan Westphal:
A Constant Factor Approximation for the Generalized Assignment Problem with Minimum Quantities and Unit Size Items. MFCS 2013: 135-145 - [p1]Graham Kendall, Stephan Westphal:
Sports Scheduling: Minimizing Travel for English Football Supporters. Automated Scheduling and Planning 2013: 61-90 - 2012
- [j11]Clemens Thielen, Stephan Westphal:
Approximation algorithms for TTP(2). Math. Methods Oper. Res. 76(1): 1-20 (2012) - 2011
- [j10]Sven Oliver Krumke, Alfred Taudes, Stephan Westphal:
Online scheduling of weighted equal-length jobs with hard deadlines on parallel machines. Comput. Oper. Res. 38(8): 1103-1108 (2011) - [j9]Sven Oliver Krumke, Clemens Thielen, Stephan Westphal:
Interval scheduling on related machines. Comput. Oper. Res. 38(12): 1836-1844 (2011) - [j8]Clemens Thielen, Stephan Westphal:
Complexity of the traveling tournament problem. Theor. Comput. Sci. 412(4-5): 345-351 (2011) - [c3]Janick V. Frasch, Sven Oliver Krumke, Stephan Westphal:
MIP Formulations for Flowshop Scheduling with Limited Buffers. TAPAS 2011: 127-138 - 2010
- [c2]Clemens Thielen, Stephan Westphal:
Approximating the Traveling Tournament Problem with Maximum Tour Length 2. ISAAC (2) 2010: 303-314
2000 – 2009
- 2009
- [j7]Irene Fink, Sven Oliver Krumke, Stephan Westphal:
New lower bounds for online k-server routing problems. Inf. Process. Lett. 109(11): 563-567 (2009) - 2008
- [j6]Stephan Westphal, Sven Oliver Krumke:
Pruning in column generation for service vehicle dispatching. Ann. Oper. Res. 159(1): 355-371 (2008) - [j5]Stephan Westphal:
A note on the k-Canadian Traveller Problem. Inf. Process. Lett. 106(3): 87-89 (2008) - [j4]Sven Oliver Krumke, Sleman Saliba, Tjark Vredeveld, Stephan Westphal:
Approximation algorithms for a vehicle routing problem. Math. Methods Oper. Res. 68(2): 333-359 (2008) - [j3]Sven Oliver Krumke, Anne Schwahn, Rob van Stee, Stephan Westphal:
A monotone approximation algorithm for scheduling with precedence constraints. Oper. Res. Lett. 36(2): 247-249 (2008) - [c1]Kerstin Bauer, Thomas Fischer, Sven Oliver Krumke, Katharina Gerhardt, Stephan Westphal, Peter Merz:
Improved Construction Heuristics and Iterated Local Search for the Routing and Wavelength Assignment Problem. EvoCOP 2008: 158-169 - 2006
- [j2]Sleman Saliba, Sven Oliver Krumke, Stephan Westphal:
Online-Optimization of Large-Scale Vehicle Dispatching Problems. Electron. Notes Discret. Math. 25: 145-146 (2006) - [j1]Stephan Westphal, Sven Oliver Krumke, Rob van Stee:
Competitive Algorithms for Cottage Rental. Electron. Notes Discret. Math. 25: 187-188 (2006)
Coauthor Index
aka: Sven O. Krumke
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