16 search results - page 1 / 4 » Hardness and Approximation of Octilinear Steiner Trees |
ISAAC
2005
Springer
13 years 10 months ago
2005
Springer
WADS
2007
Springer
13 years 11 months ago
2007
Springer
We present a polynomial-time approximation scheme (PTAS) for the Steiner tree problem with polygonal obstacles in the plane with running time O(n log2 n), where n denotes the numb...
TCBB
2010
13 years 3 months ago
2010
— We explore the maximum parsimony (MP) and ancestral maximum likelihood (AML) criteria in phylogenetic tree reconstruction. Both problems are NP hard, so we seek approximate sol...
SODA
2012
ACM
11 years 7 months ago
2012
ACM
The Directed Steiner Tree (DST) problem is a cornerstone problem in network design. We focus on the generalization of the problem with higher connectivity requirements. The proble...
ESA
2004
Springer
13 years 8 months ago
2004
Springer
