320 search results - page 51 / 64 » Parity Problems in Planar Graphs |
APPROX
2009
Springer
14 years 2 months ago
2009
Springer
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...
SIAMDM
2008
13 years 7 months ago
2008
Let G be a connected graph, and let V and V two n-element subsets of its vertex set V (G). Imagine that we place a chip at each element of V and we want to move them into the posi...
WDAG
2010
Springer
13 years 6 months ago
2010
Springer
Abstract. Since in general it is NP-hard to solve the minimum dominating set problem even approximatively, a lot of work has been dedicated to central and distributed approximation...
SIAMDM
2010
13 years 2 months ago
2010
The following problem was introduced by Marcin Krzywkowski as a generalization of a problem of Todd Ebert. After initially coordinating a strategy, n players each occupy a differe...
STOC
2004
ACM
14 years 8 months ago
2004
ACM
We establish several approximate max-integral-flow / minmulticut theorems. While in general this ratio can be very large, we prove strong approximation ratios in the case where th...