Dagstuhl Seminar 08201

Design and Analysis of Randomized and Approximation Algorithms

Dagstuhl, May 11-16, 2008

M. Dyer (Leeds), M. Jerrum (London), M. Karpinski (Bonn)



Monday, May 12th, 2008


09:00 - 09:10 Opening
Chair: Marek Karpinski
09:10 - 09:40 Alan Frieze (CMU - Pittsburgh)
Finding a Maximum Matching in a Sparse Random Graph in O(n) Expected Time
09:40 - 10:10 Alexander Barvinok (University of Michigan)
Counting contingency tables and integer flows
10:10 - 10:40 Alex D. Scott (Oxford University)
Triangles in random graphs
10:40 - 11:00 Coffee break
Chair: Mark Jerrum
11:00 - 11:30 Michael Langberg (The Open Univ. of Israel - Raanan)
Two subgraph maximization problems
11:30 - 12:00 Zoya Svitkina (Dartmouth College - Hanover)
Sampling-based algorithms for submodular approximation
12:15 Lunch break
Chair: Martin Dyer
15:00 - 15:30 Catherine Greenhill (Univ. of New South Wales)
The cycle structure of two rows in a random latin square
15:30 - 16:00 Colin Cooper (King's College - London)
Multiple random walks on random regular graphs
16:00 - 16:30 Coffee break
18:00 Dinner


Tuesday, May 13th, 2008


Chair: Alan Frieze
09:00 - 09:30 Mark Jerrum (Queen Mary College - London)
An Approximation Trichotomy for Boolean #CSP
09:30 - 10:00 Leslie Ann Goldberg (University of Liverpool)
A complexity dichotomy for partition functions with mixed signs
10:00 - 10:30 Dimitris Achlioptas (Univ. California - Santa Cruz)
Algorithmic Phase Transitions in Random Constraint Satisfaction Problems
10:30 - 11:00 Coffee break
Chair: Michael Paterson
11:00 - 11:30 Christoph Dürr (CNRS, Ecole Polytechnique - Palaiseau)
Nash equilibria in Voronoi games on graphs
11:30 - 12:00 Ingo Wegener (Technische Universität Dortmund)
Tight Bounds for Blind Search on the Integers
12:15 Lunch break
Chair: Dorit Hochbaum
15:00 - 15:30 Thomas Hayes (Toyota Technological Institute)
The Forgiving Tree
15:30 - 16:00 Markus Jalsenius (University of Liverpool)
A systematic scan for 7-colourings of the grid
16:00 - 16:30 Coffee break
18:00 Dinner


Wednesday, May 14th, 2008


Chair: Moni Naor
09:00 - 09:30 Uriel Feige (Weizmann Inst. - Rehovot)
Structural Approximations: A Framework for Analyzing and Designing Heuristics
09:30 - 10:00 Bernd Gärtner (ETH Zürich)
Rational Unique Sink Orientations
10:00 - 10:30 Alantha L. Newman (RWTH Aachen)
Linear Equations mod p
10:30 - 11:00 Coffee break
Chair: Alexander Barvinok
11:00 - 11:30 Dorit S. Hochbaum (Univ. California - Berkeley)
Cut-based algorithms for image segmentation
11:30 - 12:00 Andrzej Lingas (Lund University)
Efficient approximation algorithms for shortest cycles in undirected graphs
12:15 Lunch break

13:30 - 17:30 Excursion
18:00 Dinner

19:30 Open Problem Session
Chair: Uriel Feige


Thursday, May 15th, 2008


Chair: Uriel Feige
09:00 - 09:30 Marek Karpinski (University of Bonn)
Sample Complexity of Nondense MAX-CUT
09:30 - 10:00 Moni Naor (Weizmann Inst. - Rehovot)
An Optimally Fair Coin Toss: Cleve’s Bound is Tight
10:00 - 10:30 Konstantinos Panagiotou (ETH Zürich)
Maximum Cuts and Other Extremal Subgraphs of Random Graphs
10:30 - 11:00 Coffee break
Chair: Peter Gritzmann
11:00 - 11:30 Christian Sohler (University of Bonn)
Clustering for Metric and Non-Metric Distance Measures
11:30 - 12:00 Leen Stougie (TU Eindhoven)
Data gathering in wireless communication networks
12:15 Lunch break
Chair: Artur Czumaj
15:00 - 15:30 Ola Svensson (IDSIA - Lugano)
(Acyclic) Job Shops are Hard to Approximate
15:30 - 16:00 Markus Bläser (Saarland University)
Randomness optimal identity tests of blackbox polynomials
16:00 - 16:30 Coffee break
18:00 Dinner


Friday, May 16th, 2008


Chair: Moni Naor
09:00 - 09:30 Martin E. Dyer (University of Leeds)
Randomly colouring random graphs
09:30 - 10:00 Magnus Bordewich (University of Durham)
Path coupling without contraction
10:00 - 10:30 Amin Coja-Oghlan (University of Edinburgh)
Quasi-random graphs: eigenvalues and discrepancy
10:30 - 11:00 Coffee break
Chair: Leslie Ann Goldberg
11:00 - 11:30 Peter Gritzmann (TU München)
Optimal Wire Ordering and Spacing in Low Power Semiconductor Design

End of Workshop

12:15 Lunch