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» Quantum Lower Bounds by Polynomials
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STOC
2010
ACM
200views Algorithms» more  STOC 2010»
14 years 5 months ago
Hardness Amplification in Proof Complexity
We present a generic method for converting any family of unsatisfiable CNF formulas that require large resolution rank into CNF formulas whose refutation requires large rank for p...
Paul Beame, Trinh Huynh and Toniann Pitassi
PODS
2001
ACM
135views Database» more  PODS 2001»
14 years 7 months ago
On the Complexity of Join Predicates
We consider the complexity of join problems, focusing on equijoins, spatial-overlap joins, and set-containment joins. We use a graph pebbling model to characterize these joins com...
Jin-yi Cai, Venkatesan T. Chakaravarthy, Raghav Ka...
ER
2007
Springer
108views Database» more  ER 2007»
14 years 1 months ago
Reasoning over Extended ER Models
Abstract. We investigate the computational complexity of reasoning over various fragments of the Extended Entity-Relationship (EER) language, which includes a number of constructs:...
Alessandro Artale, Diego Calvanese, Roman Kontchak...
ISAAC
2005
Springer
110views Algorithms» more  ISAAC 2005»
14 years 1 months ago
Minimum Entropy Coloring
Abstract We study an information-theoretic variant of the graph coloring problem in which the objective function to minimize is the entropy of the coloring. The minimum entropy of ...
Jean Cardinal, Samuel Fiorini, Gwenaël Joret
CAAN
2007
Springer
13 years 11 months ago
Nonadaptive Selfish Routing with Online Demands
We study the efficiency of selfish routing problems in which traffic demands are revealed online. We go beyond the common Nash equilibrium concept in which possibly all players rer...
Tobias Harks, László A. Végh