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» Complexity of the Cover Polynomial
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CCCG
2006
13 years 11 months ago
An Improved Approximation Factor For The Unit Disk Covering Problem
We present a polynomial time algorithm for the unit disk covering problem with an approximation factor 72, and show that this is the best possible approximation factor based on th...
Sada Narayanappa, Petr Vojtechovský
CIE
2008
Springer
13 years 11 months ago
Linear, Polynomial or Exponential? Complexity Inference in Polynomial Time
Amir M. Ben-Amram, Neil D. Jones, Lars Kristiansen
ICGI
2010
Springer
13 years 11 months ago
Generalizing over Several Learning Settings
We recapitulate regular one-shot learning from membership and equivalence queries, positive and negative finite data. We present a meta-algorithm that generalizes over as many sett...
Anna Kasprzik
ISAAC
2000
Springer
135views Algorithms» more  ISAAC 2000»
14 years 1 months ago
On Approximating Minimum Vertex Cover for Graphs with Perfect Matching
It has been a challenging open problem whether there is a polynomial time approximation algorithm for the Vertex Cover problem whose approximation ratio is bounded by a constant l...
Jianer Chen, Iyad A. Kanj
ER
2007
Springer
108views Database» more  ER 2007»
14 years 4 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...