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SODA
2012
ACM
185views Algorithms» more  SODA 2012»
13 years 6 months ago
On a linear program for minimum-weight triangulation
ABSTRACT∗ Arman Yousefi† Neal E. Young‡ Minimum-weight triangulation (MWT) is NP-hard. It has a polynomial-time constant-factor approximation algorithm, and a variety of e...
Arman Yousefi, Neal E. Young
ISAAC
2007
Springer
158views Algorithms» more  ISAAC 2007»
15 years 10 months ago
On the Expressive Power of Planar Perfect Matching and Permanents of Bounded Treewidth Matrices
Valiant introduced some 25 years ago an algebraic model of computation along with the complexity classes VP and VNP, which can be viewed as analogues of the classical classes P and...
Uffe Flarup, Pascal Koiran, Laurent Lyaudet
APPROX
2009
Springer
131views Algorithms» more  APPROX 2009»
15 years 10 months ago
An Approximation Scheme for Terrain Guarding
We obtain a polynomial time approximation scheme for the terrain guarding problem improving upon several recent constant factor approximations. Our algorithm is a local search algo...
Matt Gibson, Gaurav Kanade, Erik Krohn, Kasturi R....
ISAAC
2007
Springer
124views Algorithms» more  ISAAC 2007»
15 years 10 months ago
Approximating the Crossing Number of Toroidal Graphs
Abstract. CrossingNumber is one of the most challenging algorithmic problems in topological graph theory, with applications to graph drawing and VLSI layout. No polynomial time con...
Petr Hlinený, Gelasio Salazar
DATE
2007
IEEE
101views Hardware» more  DATE 2007»
15 years 10 months ago
Polynomial-time subgraph enumeration for automated instruction set extension
This paper proposes a novel algorithm that, given a data-flow graph and an input/output constraint, enumerates all convex subgraphs under the given constraint in polynomial time ...
Paolo Bonzini, Laura Pozzi