edu.udo.cs.miningmart.schemamatching
Class NgramMatcher

java.lang.Object
  edu.udo.cs.miningmart.schemamatching.MmSchemaMatcher
      edu.udo.cs.miningmart.schemamatching.StringBasedSchemaMatcher
          edu.udo.cs.miningmart.schemamatching.NgramMatcher

public class NgramMatcher

extends StringBasedSchemaMatcher

A simple matcher based on a comparison of all possible pairs of n-grams of two strings. The value of n is set in the constructor.

Version:

$Id: NgramMatcher.java,v 1.4 2006/04/11 14:10:17 euler Exp $

Author:

Timm Euler

Constructor Summary

NgramMatcher(int n)
Constructor.

Method Summary

double

getStringSimilarity(java.lang.String str1, java.lang.String str2) Returns the double value that this matcher considers as the similarity between the two given Strings.

Methods inherited from class edu.udo.cs.miningmart.schemamatching.StringBasedSchemaMatcher

getDirectSimilarity, getDirectSimilarity, getSimilarityInvolvingConcepts

Methods inherited from class edu.udo.cs.miningmart.schemamatching.MmSchemaMatcher

getSimilarity, getSimilarityMatrix, getThresholdForComparingAttributes, getThresholdForComparingConcepts

Methods inherited from class java.lang.Object

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

Constructor Detail

NgramMatcher

public NgramMatcher(int n)

Constructor. Allows to set the length of an n-gram.

Parameters:

n - the length of an n-gram

Method Detail

getStringSimilarity

public double getStringSimilarity(java.lang.String str1,
                                  java.lang.String str2)
                           throws SchemaMatchException

Description copied from class: StringBasedSchemaMatcher

Returns the double value that this matcher considers as the similarity between the two given Strings.

Specified by:

getStringSimilarity in class StringBasedSchemaMatcher

Parameters:

str1 - One String

str2 - Another String

Returns:

a similarity value

Throws:

SchemaMatchException

See Also:

StringBasedSchemaMatcher.getStringSimilarity(String, String)