572 search results - page 4 / 115 » Exponential-Time Approximation of Hard Problems |
COCO
2008
Springer
13 years 10 months ago
2008
Springer
![Approximation of Natural W[P]-Complete Minimisation Problems Is Hard](https://www.sciweavers.org/files/imagecache/thumbnail/default/content.jpg "Approximation of Natural W[P]-Complete Minimisation Problems Is Hard")
We prove that the weighted monotone circuit satisfiability problem has no fixed-parameter tractable approximation algorithm with constant or polylogarithmic approximation ratio un...
DAM
2006
13 years 8 months ago
2006
Subtree filament graphs are the intersection graphs of subtree filaments in a tree. This class of graphs contains subtree overlap graphs, interval filament graphs, chordal graphs,...
JCO
2007
13 years 8 months ago
2007
Let G = (V, E) be a connected multigraph, whose edges are associated with labels specified by an integer-valued function L : E → N. In addition, each label ℓ ∈ N has a non-...
ICAC
2006
IEEE
14 years 2 months ago
2006
IEEE
— Over the past decade, wide-area distributed computing has emerged as a powerful computing paradigm. Virtual machines greatly simplify wide-area distributed computing ing the ab...
ISAAC
2004
Springer
14 years 1 months ago
2004
Springer
String comparison is a fundamental problem in computer science, with applications in areas such as computational biology, text processing or compression. In this paper we address t...