info.debatty.java.stringsimilarity

Class MetricLCS

java.lang.Object

info.debatty.java.stringsimilarity.MetricLCS

All Implemented Interfaces:

MetricStringDistance, NormalizedStringDistance, StringDistance, Serializable

@Immutable
public class MetricLCS
extends Object
implements MetricStringDistance, NormalizedStringDistance

Distance metric based on Longest Common Subsequence, from the notes "An LCS-based string metric" by Daniel Bakkelund.

Author:

Thibault Debatty

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MetricLCS()

Method Summary

Modifier and Type	Method and Description
double	distance(String s1, String s2) Distance metric based on Longest Common Subsequence, computed as 1 - |LCS(s1, s2)| / max(|s1|, |s2|).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MetricLCS

public MetricLCS()

Method Detail

distance

public final double distance(String s1,
                             String s2)

Distance metric based on Longest Common Subsequence, computed as 1 - |LCS(s1, s2)| / max(|s1|, |s2|).

Specified by:

distance in interface MetricStringDistance

Specified by:

distance in interface StringDistance

Parameters:

s1 - The first string to compare.

s2 - The second string to compare.

Returns:

The computed distance metric value.

Throws:

NullPointerException - if s1 or s2 is null.