433 search results - page 18 / 87 » A greedy approximation algorithm for the group Steiner probl... |
STOC
2003
ACM
14 years 7 months ago
2003
ACM
In this paper, we show that any n point metric space can be embedded into a distribution over dominating tree metrics such that the expected stretch of any edge is O(log n). This ...
INFOCOM
2009
IEEE
14 years 2 months ago
2009
IEEE
—With the explosive deployment of “triple play” (voice, video and data services) over the same access network, guaranteeing a certain-level of survivability for the access ne...
CORR
2007
Springer
13 years 7 months ago
2007
Springer
A path from s to t on a polyhedral terrain is descending if the height of a point p never increases while we move p along the path from s to t. No efficient algorithm is known to ...
SODA
2000
ACM
13 years 8 months ago
2000
ACM
The Steiner tree problem in weighted graphs seeks a minimum weight connected subgraph containing a given subset of the vertices terminals. We present a new polynomial-time heurist...
SIAMCOMP
2008
13 years 7 months ago
2008
We develop approximation algorithms for the problem of placing replicated data in arbitrary networks, where the nodes may both issue requests for data objects and have capacity fo...