water.util.comparison.string

Class H2OJaroWinklerComparator

java.lang.Object

water.util.comparison.string.H2OJaroWinklerComparator

All Implemented Interfaces:

StringComparator

public class H2OJaroWinklerComparator
extends java.lang.Object
implements StringComparator

An implementation of the Jaro-Winkler string similarity measure. The implementation follows the description in the paper "Evaluating String Comparator Performance for Record Linkage", by William E. Yancey, RESEARCH REPORT SERIES (Statistics #2005-05), US Bureau of the Census. http://www.census.gov/srd/papers/pdf/rrs2005-05.pdf

Constructor Summary

Constructors

Constructor and Description
H2OJaroWinklerComparator()

Method Summary

Modifier and Type	Method and Description
double	compare(java.lang.String s1, java.lang.String s2)
boolean	isTokenized()
static double	similarity(java.lang.String s1, java.lang.String s2) Returns normalized score, with 0.0 meaning no similarity at all, and 1.0 meaning full equality.

Methods inherited from class java.lang.Object

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

Constructor Detail

H2OJaroWinklerComparator

public H2OJaroWinklerComparator()

Method Detail

compare

public double compare(java.lang.String s1,
                      java.lang.String s2)

Specified by:

compare in interface StringComparator

isTokenized

public boolean isTokenized()

Specified by:

isTokenized in interface StringComparator

similarity

public static double similarity(java.lang.String s1,
                                java.lang.String s2)

Returns normalized score, with 0.0 meaning no similarity at all, and 1.0 meaning full equality.