SnowballStemmer (Terrier Information Retrieval Platform 5.5 API)

java.lang.Object
- org.terrier.terms.StemmerTermPipeline
- - org.terrier.terms.SnowballStemmer

All Implemented Interfaces:

Stemmer, TermPipeline

Direct Known Subclasses:

DanishSnowballStemmer, DutchSnowballStemmer, EnglishSnowballStemmer, FinnishSnowballStemmer, FrenchSnowballStemmer, GermanSnowballStemmer, HungarianSnowballStemmer, ItalianSnowballStemmer, NorwegianSnowballStemmer, PortugueseSnowballStemmer, RomanianSnowballStemmer, RussianSnowballStemmer, SpanishSnowballStemmer, SwedishSnowballStemmer, TurkishSnowballStemmer
```
public abstract class SnowballStemmer
extends StemmerTermPipeline
```
Classic Snowball stemmer implmented by Snowball.

Author:

Craig Macdonald

Field Summary

Fields
Modifier and Type	Field	Description
`protected static java.lang.Object[]`	`emptyArgs`
`protected java.lang.String`	`language`	The language that we're currently stemming in
`protected org.tartarus.snowball.SnowballProgram`	`stemmer`	The actual Snowball object that does the stemming
`protected java.lang.reflect.Method`	`stemMethod`	The appropriate method.

Fields inherited from class org.terrier.terms.StemmerTermPipeline
next

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`SnowballStemmer(java.lang.String StemLanguage, TermPipeline next)`	Creates a new stemmer object for the language StemLanguage.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

java.lang.String stem(java.lang.String term)
Stems the given term and returns the stem
- Methods inherited from class org.terrier.terms.StemmerTermPipeline
  processTerm, reset
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - stemmer
```
protected org.tartarus.snowball.SnowballProgram stemmer
```
    The actual Snowball object that does the stemming
  - stemMethod
```
protected java.lang.reflect.Method stemMethod
```
    The appropriate method. Damn reflection APIs.
  - language
```
protected java.lang.String language
```
    The language that we're currently stemming in
  - emptyArgs
```
protected static final java.lang.Object[] emptyArgs
```
- Constructor Detail
  - SnowballStemmer
```
protected SnowballStemmer(java.lang.String StemLanguage,
                          TermPipeline next)
```
    Creates a new stemmer object for the language StemLanguage.
    
    Parameters:
    
    StemLanguage - Name of the language to generate the stemmer for. Must be a valid Snowball stemmer language.
    
    next - The next object in the term pipeline
- Method Detail
  - stem
```
public java.lang.String stem(java.lang.String term)
```
    Stems the given term and returns the stem
    
    Parameters:
    
    term - the term to be stemmed.
    
    Returns:
    
    the stemmed form of term