105 search results - page 7 / 21 » A 3-Approximation for the Minimum Tree Spanning k Vertices |
ALGORITHMICA
2010
13 years 7 months ago
2010
Let A be a set of size m. Obtaining the first k m elements of A in ascending order can be done in optimal O(m + k log k) time. We present Incremental Quicksort (IQS), an algorith...
ICTAI
2006
IEEE
14 years 1 months ago
2006
IEEE
We propose two Euclidean minimum spanning tree based clustering algorithms — one a k-constrained, and the other an unconstrained algorithm. Our k-constrained clustering algorith...
IPCO
2001
13 years 9 months ago
2001
Garg [10] gives two approximation algorithms for the minimum-cost tree spanning k vertices in an undirected graph. Recently Jain and Vazirani [16] discovered primal-dual approxima...
SODA
1998
ACM
13 years 9 months ago
1998
ACM
Given an undirected graph with nonnegative costs on the edges, the routing cost of any of its spanning trees is the sum over all pairs of vertices of the cost of the path between t...
WAOA
2005
Springer
14 years 1 months ago
2005
Springer
Let T = (V, E) be an undirected tree, in which each edge is associated with a non-negative cost, and let {s1, t1}, . . . , {sk, tk} be a collection of k distinct pairs of vertices...