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ORCIDCTW 2009: Paris, France
- Sonia Cafieri, Antonio Mucherino, Giacomo Nannicini, Fabien Tarissan, Leo Liberti:
Proceedings of the 8th Cologne-Twente Workshop on Graphs and Combinatorial Optimization, CTW 2009, Paris, France, June 2-4 2009. 2009
Traveling Salesman Problem
- Changxing Dong, Christian Ernst, Gerold Jäger, Dirk Richter, Paul Molitor:
Effective Heuristics for Large Euclidean TSP Instances Based on Pseudo Backbones. 3-6 - Marco Casazza, Alberto Ceselli, Marc Nunkesser:
Efficient Algorithms for the Double Traveling Salesman Problem with Multiple Stacks. 7-10 - Maurizio Bruglieri, Alberto Colorni, Alessandro Lué:
The Parking Warden Tour Problem. 11-15
Graph Theory I
- Ignasi Sau, Dimitrios M. Thilikos:
On Self-Duality of Branchwidth in Graphs of Bounded Genus. 19-22 - Stavros D. Nikolopoulos, Charis Papadopoulos:
A Simple Linear-Time Recognition Algorithm for Weakly Quasi-Threshold Graphs. 23-27 - Harald Gropp:
From Sainte-Laguü to Claude Berge - French Graph Theory in the Twentieth Century. 28-32
Combinatorial Optimization
- Jens Maßberg, Tim Nieberg:
Colored Independent Sets. 35-39 - Vadim V. Lozin:
A Note on the Parameterized Complexity of the Maximum Independent Set Problem. 40-43 - Gaia Nicosia, Andrea Pacifici, Ulrich Pferschy:
On Multi-Agent Knapsack Problems. 44-47 - Luidi Simonetti, Yuri Frota, Cid C. de Souza:
An Exact Method for the Minimum Caterpillar Spanning Problem. 48-51
Coloring I
- Raphael Machado, Celina M. H. de Figueiredo:
NP-Completeness of Determining the Total Chromatic Number of Graphs that do not Contain a Cycle with a Unique Chord. 55-59 - Ross J. Kang, Tobias Müller:
Acyclic and Frugal Colourings of Graphs. 60-63 - Petros A. Petrosyan, H. E. Sargsyan:
On Resistance of Graphs. 64-67 - Evangelos Bampas, Aris Pagourtzis, George Pierrakos, Vasileios Syrgkanis:
Colored Resource Allocation Games. 68-72
Cutting and Packing
- Claudio Arbib, Fabrizio Marinelli, Carlo M. Scoppola:
A Lower Bound for the Cutting Stock Problem with a Limited Number of Open Stacks. 75-78 - Henning Fernau, Daniel Raible:
Packing Paths: Recycling Saves Time. 79-83 - Jens Maßberg, Jan Schneider:
Rectangle Packing with Additional Restrictions. 84-86
Paths
- Fábio Luiz Usberti, Paulo Morelato França, André Luiz Morelato França:
The Open Capacitated Arc Routing Problem. 89-92 - Mirko Maischberger:
Optimising Node Coordinates for the Shortest Path Problem. 93-96 - Ramesh Bhandari:
The Sliding Shortest Path Algorithms. 97-101
Quadratic Programming
- Walid Ben-Ameur, José Neto:
A Polynomial-Time Recursive Algorithm for some Unconstrained Quadratic Optimization Problems. 105-108 - Ingmar Schüle, Hendrik Ewe, Karl-Heinz Küfer:
Finding Tight RLT Formulations for Quadratic Semi-Assignment Problems. 109-112
Trees
- Abdelfattah Abouelaoualim, Valentin Borozan, Yannis Manoussakis, Carlos A. J. Martinhon, Rahul Muthu, Rachid Saad:
Colored Trees in Edge-Colored Graphs. 115-119 - Kathie Cameron, Joanna B. Fawcett:
Intermediate Trees. 120-121
Plenary Session I
- Andrea Lodi, Ted K. Ralphs:
Bilevel Programming and Maximally Violated Valid Inequalities. 125-134
Integer Programming
- Rüdiger Schultz:
Decomposition Methods for Stochastic Integer Programs with Dominance Constraints. 137-139 - Stefanie Kosuch, Abdel Lisser:
On a Two-Stage Stochastic Knapsack Problem with Probabilistic Constraint. 140-143 - Gérard Cornuéjols, Leo Liberti, Giacomo Nannicini:
Improved Strategies for Branching on General Disjunctions. 144-145
Graph Theory II
- Gyula Y. Katona, Illés Horváth:
Extremal Stable Graphs. 149-152 - Valeria A. Leoni, Maria Patricia Dobson, Graciela L. Nasini:
Recognizing Edge-Perfect Graphs: some Polynomial Instances. 153-156 - Maria Aguieiras A. de Freitas, Nair Maria Maia de Abreu, Renata R. Del-Vecchio:
Some Infinite Families of Q-Integral Graphs. 157-160
Applications
- Alberto Ceselli, Roberto Cordone, Marco Cremonini:
Balanced Clustering for Efficient Detection of Scientific Plagiarism. 163-170 - Valentina Cacchiani, Alberto Caprara, Matteo Fischetti:
Robustness in Train Timetabling. 171-174 - Fabio Roda, Leo Liberti, Franco Raimondi:
Combinatorial Optimization Based Recommender Systems. 175-179 - Roberto Cordone, Federico Ficarelli, Giovanni Righini:
Bounds and Solutions for Strategic, Tactical and Operational Ambulance Location. 180-183
Coloring II
- Edna Ayako Hoshino, Yuri Frota, Cid C. de Souza:
A Branch-and-Price Approach for the Partition Coloring Problem. 187-190 - María Soto, André Rossi, Marc Sevaux:
Two Upper Bounds on the Chromatic Number. 191-194 - Flavia Bonomo, Guillermo Durán, Javier Marenco, Mario Valencia-Pabon:
Minimum Sum Set Coloring on some Subclasses of Block Graphs. 195-198 - Andrew Lyons:
Acyclic and Star Colorings of Joins of Graphs and an Algorithm for Cographs. 199-202
Exact Algorithms
- Henning Fernau, Serge Gaspers, Dieter Kratsch, Mathieu Liedloff, Daniel Raible:
Exact Exponential-Time Algorithms for Finding Bicliques in a Graph. 205-209 - Lucio Bianco, Massimiliano Caramia:
An Exact Algorithm to Minimize the Makespan in Project Scheduling with Scarce Resources and Feeding Precedence Relations. 210-214 - Rita Macedo, Cláudio Alves, José M. Valério de Carvalho:
Exact Algorithms for Vehicle Routing Problems with Different Service Constraints. 215-218
Networks I
- Dmitrii Lozovanu, Stefan Pickl:
Algorithmic Solutions of Discrete Control Problems on Stochastic Networks. 221-224 - Lucile Belgacem, Irène Charon, Olivier Hudry:
Routing and Wavelength Assignment in Optical Networks by Independent Sets in Conflict Graphs. 225-228 - André Luiz Pires Guedes, Lilian Markenzon, Luérbio Faria:
Recognition of Reducible Flow Hypergraphs. 229-232
Complexity
- Andrea Scozzari, Fabio Tardella:
On the Complexity of Graph-Based Bounds for the Probability Bounding Problem. 235-238 - Birgit Engels, Sven Oliver Krumke, Rainer Schrader, Christiane Zeck:
Integer Flow with Multipliers: The Special Case of Multipliers 1 and 2. 239-243
Polyhedra
- Rüdiger Stephan:
Classification of 0/1-Facets of the Hop Constrained Path Polytope Defined on an Acyclic Digraph. 247-250 - Anna Galluccio, Claudio Gentile, M. Macina, Paolo Ventura:
The k-Gear Composition and the Stable Set Polytope. 251-254
Plenary Session II
- Michel Habib:
Diameter and Center Computations in Networks. 257-258
Polynomial-time Algorithms
- Manuel Bodirsky, Gustav Nordh, Timo von Oertzen:
Integer Programming with 2-Variable Equations and 1-Variable Inequalities. 261-264 - Dirk Müller:
Faster Min-Max Resource Sharing and Applications. 265-268 - Andrea Bettinelli, Leo Liberti, Franco Raimondi, David Savourey:
The Anonymous Subgraph Problem. 269-274
Graph Theory III
- Rafael Ayala, Desamparados Fernández-Ternero, José Antonio Vilches:
The Number of Excellent Discrete Morse Functions on Graphs. 277-280 - Flavia Bonomo, Guillermo Durán, Luciano N. Grippo, Martín Darío Safe:
Partial Characterizations of Circle Graphs. 281-284 - Takeya Shigezumi, Yushi Uno, Osamu Watanabe:
A Replacement Model for a Scale-Free Property of Cliques. 285-289
Graph Theory IV
- Andreas Darmann, Ulrich Pferschy, Joachim Schauer, Gerhard J. Woeginger:
Combinatorial Optimization Problems with Conflict Graphs. 293-296 - José M. Sigarreta Almira, Ismael González Yero, Sergio Bermudo, Juan Alberto Rodríguez-Velázquez:
On the Decomposition of Graphs into Offensive k-Alliances. 297-300 - Michael Brinkmeier:
Increasing the Edge Connectivity by One in O(lambda_G n^2 log* n) Expected Time. 301-304 - Vassilis Giakoumakis, Cheikh Brahim Ooud El Mounir:
Enumerating all Finite Sets of Minimal Prime Extensions of Graphs. 305-309
Networks II
- Cédric Bentz:
On Planar and Directed Multicuts with few Source-Sink Pairs. 313-316 - Fábio Luiz Usberti, José Federico Vizcaino González, Christiano Lyra Filho, Celso Cavellucci:
Maintenance Resources Allocation on Power Distribution Networks with a Multi-Objective Framework. 317-320 - Enrico Grande, Pitu B. Mirchandani, Andrea Pacifici:
Column Generation for the Multicommodity Min-cost Flow Over Time Problem. 321-324 - Fabien Tarissan, Camilo La Rota:
Inferring Update Sequences in Boolean Gene Regulatory Networks. 325-329
Bioinformatics
- Gunnar Brinkmann, Nicolas Van Cleemput:
NANOCONES - A Classification Result in Chemistry. 333-336 - Antonio Mucherino, Carlile Lavor, Nelson Maculan:
The Molecular Distance Geometry Problem Applied to Protein Conformations. 337-340 - Guillaume Collet, Rumen Andonov, Nicola Yanev, Jean-François Gibrat:
Protein Threading. 341-344
Clustering
- José R. Correa, Nicole Megow, Rajiv Raman, Karol Suchan:
Cardinality Constrained Graph Partitioning into Cliques with Submodular Costs. 347-350 - Frauke Liers, G. Pardella:
A Simple MAX-CUT Algorithm for Planar Graphs. 351-354 - Edoardo Amaldi, Stefano Coniglio, Kanika Dhyani:
k-Hyperplane Clustering Problem: Column Generation and a Metaheuristic. 355-358
Games
- Ulrich Faigle, Jan Voss:
A System-Theoretic Model for Cooperation and Allocation Mechanisms. 361-364
Matrices
- Le Anh Vinh:
Distribution of Permanent of Matrices with Restricted Entries over Finite Fields. 367-370
Plenary Session III
- Jon Lee:
On the Boundary of Tractability for Nonlinear Discrete Optimization. 373-383
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