Monday, 8 January

Chair: Michael Jünger

08:15-08:30 Michael Jünger, Gerhard Reinelt, Giovanni Rinaldi Welcome
08:30-09:00 Robert Weismantel Convex relaxations in mixed integer nonlinear programming
09:00-09:30 Christoph Buchheim A slightly extended formulation for nonlinear 0/1 optimization problems
09:30-10:00 Jose´ Neto Spectral bounds for the max-cut problem

COFFEE BREAK
Chair: Gerhard Reinelt

10:30-11:00 Thomas Rothvoß An improved bound for the random sampling algorithm for connected facility location
11:00-11:30 Jarek Byrka n optimal bifactor approximation algorithm for the metric uncapacitated facility location problem
11:30-12:00 Jens Massberg Facility location and clocktree design

LUNCH/SKI BREAK
Chair: Giovanni Rinaldi

17:30-18:00 Karen Aardal Using input structure to solve hard integer programs
18:00-18:30 Gabor Pataki Column basis reduction, and decomposable knapsack problems
18:30-19:00 Volker Kaibel Orbitopal fixing
19:00-19:30 Sanjeeb Dash The general master knapsack polyhedron

Tuesday, 9 January

Chair: Rolf H. Möhring

08:30-09:00 Martin Skutella A network flow problem with unit path capacities
09:00-09:30 Ronald Koch Nash equilibria for flows over time
09:30-10:00 Tom McCormick Parametric minimum cuts: how far? how fast?

COFFEE BREAK
Chair: Laurence A. Wolsey

10:30-11:00 Egon Balas Lift-and-project and the cycle polytope
11:00-11:30 Jean-François Maurras On the k-cliques polyhedra
11:30-12:00 Quentin Louveaux Cutting planes from lattice-point-free polyhedra

LUNCH/SKI BREAK
Chair: Uwe Zimmermann

17:30-18:00 Elisabeth Gassner Inverse maxian problems with variable edge lengths on a tree
18:00-18:30 Marc Pfetsch Exact support minimum solutions to underdetermined linear equations
18:30-19:00 Gennady Shmonin Testing integer rounding properties
19:00-19:30 Benjamin Leveque Optimizing diversity

Wednesday, 10 January

Chair: Klaus Truemper

08:30-09:00 Laurence A. Wolsey Multi-item lot-sizing with joint set-up cost
09:00-09:30 Yves Pochet Single item lot-sizing with non-decreasing capacities
09:30-10:00 Andrea Lodi Approximation algorithms for the multi-item capacitated lot-sizing problem via flow-cover inequalities

COFFEE BREAK
Chair: Paolo Toth

10:30-11:00 Alberto Caprara A new approximation framework for set covering, with applications in multidimensional packing
11:00-11:30 Enrico Malaguti A set-covering based approach for a weighted vertex coloring problem
11:30-12:00 Sandro Bosio Hyperbolic set covering problems with competing ground-set elements

LUNCH/SKI BREAK
Chair: Gerhard Woeginger

17:30-18:00 Klaus Truemper An algorithm for Q-ALL SAT with learning via heuristics
18:00-18:30 Frauke Liers Local cuts for binary non-linear programs
18:30-19:00 Marcus Oswald A new approach for solving coupled task scheduling problems
19:00-19:30 Cristiano Saturni A cutting plane algorithm based on a metaheuristic separator and an extension of the pairing operation of two inequalities

Thursday, 11 January

Chair: Manfred W. Padberg
Chair: Egon Balas

08:30-09:00 Giampaolo Oriolo A short proof of the VPN conjecture on a ring
09:00-09:30 Markus Chimani A new cut formulation for fiber-optics networks with redundancy
09:30-10:00 Elke Eisenschmidt Integral decomposition of discrete/polyhedral sets and the design of survivable networks

COFFEE BREAK
Chair: Martine Labbé

10:30-11:00 David P. Williamson A general technique for incremental approximation and hierarchical clustering
11:00-11:30 Aykut Ozsoy Clique partitioning with size constraints
11:30-12:00
CANCELLED

LUNCH/SKI BREAK



17:30-18:00 Juan-José Salazar-Gonzalez The travelling salesman problem with pickups and deliveries of stochastic demands
18:00-18:30 Christian Schulte VLSI yield optimization in detailed routing
18:30-19:00 Valentina Cacchiani Solving a real-world train unit assignment problem
19:00-19:30 Matthias Prandtstetter Reconstructing sheets of manually torn paper

Friday, 12 January

Chair: Gérard Cornuéjols

08:30-09:00 Immanuel Bomze The first cut is the cheapest-improving SDP bounds for the clique number
09:00-09:30 Christoph Helmberg Experiments with linear and semidefinite relaxations for solving the minimum graph bisection problem
09:30-10:00 Marco Lübbecke Optimizing the Swiss cargo network

COFFEE BREAK
Chair: Denis Naddef

10:30-11:00 Florent Cadoux Wolfe's projection algorithm applied to the computation of disjunctive cuts
11:00-11:30 Anureet Saxena MIPing probabilistic constraints with random right hand sides
11:30-12:00 Matteo Fischetti MIP models for MIP heuristics

LUNCH / ONE-YEAR BREAK