csli.util.nlp.stem
Class AdvancedPorterStemmer

java.lang.Object
  csli.util.nlp.Stemmer
      csli.util.nlp.stem.AdvancedPorterStemmer

All Implemented Interfaces:

Serializable

public class AdvancedPorterStemmer
extends Stemmer

See Also:

Serialized Form

Constructor Summary

AdvancedPorterStemmer()

Method Summary

protected boolean	containsVowel(String str)
protected boolean	endsWithCVC(String str)
protected boolean	endsWithDoubleConsonent(String str)
protected boolean	endsWithS(String str)
boolean	isVowel(char c)
String	stem(String str) Stem a word string.
protected String	step1a(String str)
protected String	step1b(String str)
protected String	step1b2(String str)
protected String	step1c(String str)
protected String	step2(String str)
protected String	step3(String str)
protected String	step4(String str)
protected String	step5a(String str)
protected String	step5b(String str)
protected int	stringMeasure(String str)

Methods inherited from class csli.util.nlp.Stemmer

stem, stem, stemScored

Methods inherited from class java.lang.Object

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

Constructor Detail

AdvancedPorterStemmer

public AdvancedPorterStemmer()

Method Detail

stem

public String stem(String str)

Description copied from class: Stemmer

Stem a word string. Should return NULL on error.

Specified by:

stem in class Stemmer

Parameters:

str - the word string to stem

Returns:

the word stem (root form) as a string

step1a

protected String step1a(String str)

step1b

protected String step1b(String str)

step1b2

protected String step1b2(String str)

step1c

protected String step1c(String str)

step2

protected String step2(String str)

step3

protected String step3(String str)

step4

protected String step4(String str)

step5a

protected String step5a(String str)

step5b

protected String step5b(String str)

endsWithS

protected boolean endsWithS(String str)

containsVowel

protected boolean containsVowel(String str)

isVowel

public boolean isVowel(char c)

endsWithDoubleConsonent

protected boolean endsWithDoubleConsonent(String str)

stringMeasure

protected int stringMeasure(String str)

endsWithCVC

protected boolean endsWithCVC(String str)