Approximating Maximum Leaf Spanning Trees in Almost Linear Time
Journal
Journal of Algorithms
Journal Volume
29
Journal Issue
1
Pages
132-141
Date Issued
1998
Author(s)
Lu, H.-I.
Ravi, R.
HSUEH-I LU
Abstract
Given an undirected graph, finding a spanning tree of the graph with the maximum number of leaves is MAX SNP-complete. In this paper we give a new greedy 3-approximation algorithm for maximum leaf spanning trees. The running time O((m + n)α(m, n)) required by our algorithm, where m is the number of edges and n is the number of nodes, is almost linear in the size of the graph. We also demonstrate that our analysis of the performance of the greedy algorithm is tight via an example. © 1998 Academic Press.
Type
journal article