org.jgrapht.alg.matching

## Class KuhnMunkresMinimalWeightBipartitePerfectMatching<V,E>

• java.lang.Object
• org.jgrapht.alg.matching.KuhnMunkresMinimalWeightBipartitePerfectMatching<V,E>
• Type Parameters:
V - the graph vertex type
E - the graph edge type
All Implemented Interfaces:
MatchingAlgorithm<V,E>

public class KuhnMunkresMinimalWeightBipartitePerfectMatching<V,E>
extends Object
implements MatchingAlgorithm<V,E>
Kuhn-Munkres algorithm (named in honor of Harold Kuhn and James Munkres) solving assignment problem also known as hungarian algorithm (in the honor of hungarian mathematicians Dénes K?nig and Jen? Egerváry). It's running time $O(V^3)$.

Assignment problem could be set as follows:

Given complete bipartite graph $G = (S, T; E)$, such that $|S| = |T|$, and each edge has non-negative cost c(i, j), find perfect matching of minimal cost.

Author:
Alexey Kudinkin

• ### Nested classes/interfaces inherited from interface org.jgrapht.alg.interfaces.MatchingAlgorithm

MatchingAlgorithm.Matching<V,E>, MatchingAlgorithm.MatchingImpl<V,E>

• ### Fields inherited from interface org.jgrapht.alg.interfaces.MatchingAlgorithm

DEFAULT_EPSILON
• ### Constructor Summary

Constructors
Constructor and Description
KuhnMunkresMinimalWeightBipartitePerfectMatching(Graph<V,E> graph, Set<? extends V> partition1, Set<? extends V> partition2)
Construct a new instance of the algorithm.
• ### Method Summary

All Methods
Modifier and Type Method and Description
MatchingAlgorithm.Matching<V,E> getMatching()
Compute a matching for a given graph.
• ### Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
• ### Constructor Detail

• #### KuhnMunkresMinimalWeightBipartitePerfectMatching

public KuhnMunkresMinimalWeightBipartitePerfectMatching(Graph<V,E> graph,
Set<? extends V> partition1,
Set<? extends V> partition2)
Construct a new instance of the algorithm.
Parameters:
graph - the input graph
partition1 - the first partition of the vertex set
partition2 - the second partition of the vertex set
• ### Method Detail

• #### getMatching

public MatchingAlgorithm.Matching<V,E> getMatching()
Compute a matching for a given graph.
Specified by:
getMatching in interface MatchingAlgorithm<V,E>
Returns:
a matching