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ICALP
2010
Springer
14 years 4 months ago
On the Inapproximability of Vertex Cover on k-Partite k-Uniform Hypergraphs
Computing a minimum vertex cover in graphs and hypergraphs is a well-studied optimizaton problem. While intractable in general, it is well known that on bipartite graphs, vertex c...
Venkatesan Guruswami, Rishi Saket
ICALP
2010
Springer
14 years 4 months ago
Additive Spanners in Nearly Quadratic Time
We consider the problem of efficiently finding an additive C-spanner of an undirected unweighted graph G, that is, a subgraph H so that for all pairs of vertices u, v, δH (u, v) ...
David P. Woodruff
ICALP
2010
Springer
14 years 4 months ago
On the k-Independence Required by Linear Probing and Minwise Independence
We show that linear probing requires 5-independent hash functions for expected constant-time performance, matching an upper bound of [Pagh et al. STOC’07]. For (1 + ε)-approxima...
Mihai Patrascu, Mikkel Thorup
ICALP
2010
Springer
14 years 4 months ago
Dynamic Programming for Graphs on Surfaces
Abstract. We provide a framework for the design and analysis of dynamic programming algorithms for surface-embedded graphs on n vertices and branchwidth at most k. Our technique ap...
Juanjo Rué, Ignasi Sau, Dimitrios M. Thilik...
ICALP
2010
Springer
14 years 4 months ago
Scheduling Periodic Tasks in a Hard Real-Time Environment
Friedrich Eisenbrand, Nicolai Hähnle, Martin ...
ICALP
2010
Springer
14 years 4 months ago
Thresholded Covering Algorithms for Robust and Max-min Optimization
The general problem of robust optimization is this: one of several possible scenarios will appear tomorrow, but things are more expensive tomorrow than they are today. What should...
Anupam Gupta, Viswanath Nagarajan, R. Ravi
ICALP
2010
Springer
14 years 4 months ago
Cell Probe Lower Bounds and Approximations for Range Mode
The mode of a multiset of labels, is a label that occurs at least as often as any other label. The input to the range mode problem is an array A of size n. A range query [i, j] mus...
Mark Greve, Allan Grønlund Jørgensen...
ICALP
2010
Springer
14 years 4 months ago
Tight Thresholds for Cuckoo Hashing via XORSAT
We settle the question of tight thresholds for offline cuckoo hashing. The problem can be stated as follows: we have n keys to be hashed into m buckets each capable of holding a s...
Martin Dietzfelbinger, Andreas Goerdt, Michael Mit...
ICALP
2010
Springer
14 years 4 months ago
Mean-Payoff Games and Propositional Proofs
We associate a CNF-formula to every instance of the mean-payoff game problem in such a way that if the value of the game is non-negative the formula is satisfiable, and if the va...
Albert Atserias, Elitza N. Maneva