The Algorithm Design Manual Second Edition



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2008 Book TheAlgorithmDesignManual

Implementations

: Chaco is a widely-used graph partitioning code designed to

partition graphs for parallel computing applications. It employs several differ-

ent partitioning algorithms, including both Kernighan-Lin and spectral methods.

Chaco is available at http://www.cs.sandia.gov/

∼bahendr/chaco.html.

METIS


(http://glaros.dtc.umn.edu/gkhome/views/metis)

is

another



well-

regarded code for graph partitioning. It has successfully partitioned graphs with

over 1,000,000 vertices. Available versions include one variant designed to run

on parallel machines and another suitable for partitioning hypergraphs. Other

respected codes include Scotch (http://www.labri.fr/perso/pelegrin/scotch/) and

JOSTLE (http://staffweb.cms.gre.ac.uk/



∼wc06/jostle/).

Notes

:

The fundamental local improvement heuristics for graph partitioning are due to



Kernighan-Lin

[KL70]


and Fiduccia-Mattheyses

[FM82]


. Spectral methods for graph par-

tition are discussed in

[Chu97, PSL90]

. Empirical results on graph partitioning heuristics

include

[BG95, LR93]

.

The planar separator theorem and an efficient algorithm for finding such a separator



are due to Lipton and Tarjan

[LT79, LT80]

. For experiences in implementing planar

separator algorithms, see

[ADGM04, HPS

+

05]



.

Any random vertex partition will expect to cut half of the edges in the graph, since the

probability that the two vertices defining an edge end up on different sides of the partition

is 1/2. Goemans and Williamson

[GW95]

gave an 0.878-factor approximation algorithm



for maximum-cut, based on semi-definite programming techniques. Tighter analysis of

this algorithm was followed by Karloff [

Kar96]

.


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