Algorithms for graph partitioning on the planted partition model - Condon - 2001 - Random Structures & Algorithms - Wiley Online Library
Volume 18, Issue 2
Full Access

Algorithms for graph partitioning on the planted partition model

Anne Condon

Corresponding Author

E-mail address: condon@cs.wisc.edu

Computer Sciences Department, University of Wisconsin, 1210 West Dayton St., Madison, WI 53706

The Department of Computer Science, University of British Colombia, 201‐2366 Main Mall, Vancouver, V6T 1Z4.Search for more papers by this author
Richard M. Karp

E-mail address: karp@cs.washington.edu

Department of Computer Science and Engineering, University of Washington, Seattle, WA 98195

Search for more papers by this author
"Library Links”

Abstract

The NP‐hard graph bisection problem is to partition the nodes of an undirected graph into two equal‐sized groups so as to minimize the number of edges that cross the partition. The more general graph l ‐partition problem is to partition the nodes of an undirected graph into l equal‐sized groups so as to minimize the total number of edges that cross between groups. We present a simple, linear‐time algorithm for the graph l ‐partition problem and we analyze it on a random “planted l ‐partition” model. In this model, the n nodes of a graph are partitioned into l groups, each of size n /l ; two nodes in the same group are connected by an edge with some probability p , and two nodes in different groups are connected by an edge with some probability r <p . We show that if p r n −1/2+ϵ for some constant ϵ, then the algorithm finds the optimal partition with probability 1− exp(−n Θ(ε)). © 2001 John Wiley & Sons, Inc. Random Struct. Alg., 18: 116–140, 2001

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.