net.sf.okapi.lib.search.lucene.scorer

Class Util

java.lang.Object

net.sf.okapi.lib.search.lucene.scorer.Util

public class Util
extends Object

Constructor Summary

Constructors

Constructor and Description
Util()

Method Summary

Methods

Modifier and Type	Method and Description
static float	calculateDiceCoefficient(int intersection, int size1, int size2) Calculate Dice's Coefficient
static float	calculateNgramDiceCoefficient(String originalSource, String newSource, AlphabeticNgramTokenizer tokenizer) Calculate Dice's Coefficient for two strings with tokens as ngrams.
static AlphabeticNgramTokenizer	createNgramTokenizer(int ngramSize, LocaleId localeId) Create a AlphabeticNgramTokenizer

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

calculateDiceCoefficient

public static float calculateDiceCoefficient(int intersection,
                             int size1,
                             int size2)

Calculate Dice's Coefficient

Parameters:

intersection - number of tokens in common between input 1 and input 2

size1 - token size of first input

size2 - token size of second input

Returns:

Dice's Coefficient as a float

calculateNgramDiceCoefficient

public static float calculateNgramDiceCoefficient(String originalSource,
                                  String newSource,
                                  AlphabeticNgramTokenizer tokenizer)

Calculate Dice's Coefficient for two strings with tokens as ngrams.

Parameters:

originalSource - first string to compare

newSource - second string to compare

tokenizer - ngram tokenizer

Returns:

Dice's Coefficient as a float

createNgramTokenizer

public static AlphabeticNgramTokenizer createNgramTokenizer(int ngramSize,
                                            LocaleId localeId)

Create a AlphabeticNgramTokenizer

Parameters:

ngramSize - size of ngram in characters

localeId - LocaleId of the content being tokenized

Returns:

a AlphabeticNgramTokenizer