96 search results - page 9 / 20 » Factoring cardinal product graphs in polynomial time |
APPROX
2009
Springer
14 years 3 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...
STOC
2010
ACM
14 years 1 months ago
2010
ACM
We consider the problem of maintaining a large matching and a small vertex cover in a dynamically changing graph. Each update to the graph is either an edge deletion or an edge in...
CP
2011
Springer
12 years 8 months ago
2011
Springer
We introduce tractable classes of VCSP instances based on convex cost functions. Firstly, we show that the class of VCSP instances satisfying the hierarchically nested convexity pr...
SIAMCOMP
2011
12 years 11 months ago
2011
We consider the Minimum Linear Arrangement problem and the (Uniform) Sparsest Cut problem. So far, these two notorious NP-hard graph problems have resisted all attempts to prove in...
STOC
2010
ACM
14 years 1 months ago
2010
ACM
We combine the work of Garg and K¨onemann, and Fleischer with ideas from dynamic graph algorithms to obtain faster (1 − ε)-approximation schemes for various versions of the mu...