Centre de recherches mathématiques
Université de Montréal

Atelier sur les algorithmes d’approximation /
Workshop on Approximation Algorithms

June 12-14, 2006

PROGRAMME

Lieu et détails / Venue and details

LUNDI 12 juin / MONDAY, June 12
08:30 - 09:00 Inscription / Registration (1er étage / 1st floor, Pavillon Andre-Aisenstadt) Café / Coffee (Salle / Room 6245)
09:00 - 09:45 Lap Chi Lau (University of Toronto)
On Steiner rooted-orientations of graphs and hypergraphs
09:45 - 10:30 Lisa Fleischer (IBM T. J. Watson Research Center)
Cost shares and approximation algorithms for network design problems
10:30 - 11:00 Pause café / Coffee Break (Salle / Room 6245)
11:00 - 11:30 Yuval Rabani (Technion)
Approximation algorithms for graph homomorphism problems
11:30 - 12:00 Anupam Gupta (Carnegie Mellon University)
Oblivious network design
12:00 - 14:00 Lunch (Salle / Room 6245)
14:00 - 14:30 Uriel Feige (Microsoft Research)
On maximizing welfare when utility functions are
subadditive
14:30 - 15:00 Jan Vondrak (Microsoft Research)
Approximation algorithms for allocation problems:
improving 1-1/e
15:00 - 15:30 Andreas Schulz (MIT)
The least core value of schedule planning games
15:30 - 16:00 Pause café / Coffee Break (Salle / Room 6245)
16:00 - 16:45 David Shmoys (Cornell University)
Approximation algorithms for stochastic inventory control models
16:45 - 17:30 Chandra Chekuri (Lucent Bell Labs)
Maximizing submodular set functions revisited
18:00 Réception de bienvenue / Welcoming Reception
MARDI 13 juin / TUESDAY, June 13
08:30 - 09:00 Café / Coffee (Salle / Room 6245)
09:00 - 09:45 Bruce Shepherd (Lucent Bell Labs)
Disjoint paths in planar graphs
09:45 - 10:30 Matthew Andrews (Lucent Bell Labs)
Hardness of routing problems in high-girth graphs
10:30 - 11:00 Pause café / Coffee Break (Salle / Room 6245)
11:00 - 11:30 Mohammad Salavatipour (University of Alberta)
Approximation and hardness results for packing cycles
11:30 - 12:00 Guy Kortsarz (Rutgers University-Camden)
Approximation algorithms for non-uniform buy-at-bulk network design problems
Lunch
14:00 - 14:45 Subhash Khot (Georgia Institute of Technology)
Hardness of approximating the shortest vector problem in lattices
14:45 - 15:30 Moses Charikar (Princeton University)
Near-optimal algorithms for unique games
15:30 - 16:00 Pause café / Coffee Break (Salle / Room 6245)
16:00 - 16:45 Sanjeev Arora (Princeton University)
Multiplicative Weight Method: A general algorithmic tool (with applications to linear and semidefinite programming)
16:45 - 17:30 Naveen Garg (Indian Institute of Technology)
Minimizing average flow-time on related machines
MERCREDI 14 juin / WEDNESDAY, June 14
08:30 - 09:00 Café / Coffee (Salle / Room 6245)
09:00 - 09:30 David Williamson (Cornell University)
A general approach for incremental approximation and
hierarchical clustering
09:30 - 10:00 Robi Krauthgamer (IBM Almaden Research Center)
Algorithms on negatively curved spaces
10:00 - 10:30 Kamal Jain (Microsoft Research)
Dimension of a poset and constraint feedback arc set
problem
10:30 - 11:00 Pause café / Coffee Break (Salle / Room 6245)
11:00 - 11:30 Jochen Konemann (University of Waterloo)
A fresh look at Steiner trees: greedy vs primal-dual
algorithms
11:30 - 12:00 Vahab Mirrokni (MIT)
Approximation Algorithms for Power Optimization in
Wireless Networks
Lunch
14:00 - 14:30 Adrian Vetta (McGill University)
Graph connectivity and malicious attacks
14:30 - 15:00 Sylvia Boyd (University of Ottawa)
On the integrality gap for the minimum cost 2-edge
connected multi-subgraph problem
15:00 - 15:30 R. Ravi (Carnegie Mellon University)
Delegate and conquer: An LP-based approximation algorithm for minimum degree MSTs
15:30 - 16:15 Michel Goemans (MIT)
Bounded-degree minimum spanning trees
16:15 Café de départ / Farewell Coffee (Salle / Room 6245)