120 search results - page 18 / 24 » Improved Steiner tree approximation in graphs |
INFOCOM
2010
IEEE
13 years 6 months ago
2010
IEEE
—Upon the occurrence of a phenomenon of interest in a wireless sensor network, multiple sensors may be activated, leading to data implosion and redundancy. Data aggregation and/o...
SIAMCOMP
2008
13 years 7 months ago
2008
We give a 7.18-approximation algorithm for the minimum latency problem that uses only O(n log n) calls to the prize-collecting Steiner tree (PCST) subroutine of Goemans and Willia...
SODA
2010
ACM
14 years 5 months ago
2010
ACM
We consider a robust model proposed by Scarf, 1958, for stochastic optimization when only the marginal probabilities of (binary) random variables are given, and the correlation be...
APPROX
2005
Springer
14 years 1 months ago
2005
Springer
A caterpillar is a tree in which all vertices of degree three or more lie on one path, called the backbone. We present a polynomial time algorithm that produces a linear arrangeme...
CPM
2006
Springer
13 years 11 months ago
2006
Springer
Abstract. In the context of non-coding RNA (ncRNA) multiple structural alignment, Davydov and Batzoglou introduced in [7] the problem of finding the largest nested linear graph tha...