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DAM
2008
90views more  DAM 2008»
13 years 9 months ago
Polarity of chordal graphs
Polar graphs are a common generalization of bipartite, cobipartite, and split graphs. They are defined by the existence of a certain partition of vertices, which is NPcomplete to ...
Tinaz Ekim, Pavol Hell, Juraj Stacho, Dominique de...
IJAC
2007
116views more  IJAC 2007»
13 years 9 months ago
On the Complexity of the Whitehead Minimization Problem
The Whitehead minimization problem consists in finding a minimum size element in the automorphic orbit of a word, a cyclic word or a finitely generated subgroup in a finite rank...
Abdó Roig, Enric Ventura, Pascal Weil
TCC
2007
Springer
102views Cryptology» more  TCC 2007»
14 years 3 months ago
Parallel Repetition of Computationally Sound Protocols Revisited
Abstract. Parallel repetition is well known to reduce the error probability at an exponential rate for single- and multi-prover interactive proofs. Bellare, Impagliazzo and Naor (1...
Krzysztof Pietrzak, Douglas Wikström
CPM
2000
Springer
160views Combinatorics» more  CPM 2000»
14 years 1 months ago
Approximation Algorithms for Hamming Clustering Problems
We study Hamming versions of two classical clustering problems. The Hamming radius p-clustering problem (HRC) for a set S of k binary strings, each of length n, is to find p bina...
Leszek Gasieniec, Jesper Jansson, Andrzej Lingas
APPROX
2008
Springer
89views Algorithms» more  APPROX 2008»
13 years 11 months ago
Santa Claus Meets Hypergraph Matchings
We consider the problem of max-min fair allocation of indivisible goods. Our focus will be on the restricted version of the problem in which there are m items, each of which assoc...
Arash Asadpour, Uriel Feige, Amin Saberi