package kea.stemmers;
/**
* Wrapper for the Snowball stemmer for Spanish // use stemSB
* Or translation of the Stemmer implemented in C
* i found here:
* http://members.unine.ch/jacques.savoy/clef/index.html
*
* @author Olena Medelyan
*/
public class SpanishStemmer extends Stemmer {
private SpanishStemmerSB stemmer = new SpanishStemmerSB();
public String stemSB(String str) {
stemmer.setCurrent(str);
stemmer.stem();
return stemmer.getCurrent();
}
/* Spanish stemmer tring to remove inflectional suffixes */
public String stem(String word) {
int len = word.length()-1;
if (len > 3) {
word = removeSpanishAccent(word);
if (word.endsWith("eses")) {
// corteses -> cortés
word = word.substring(0,len-1);
return word;
}
if (word.endsWith("ces")) {
// dos veces -> una vez
word = word.substring(0,len-2);
word = word + 'z';
return word;
}
if (word.endsWith("os") || word.endsWith("as") || word.endsWith("es")) {
// ending with -os, -as or -es
word = word.substring(0,len-1);
return word;
}
if (word.endsWith("o") || word.endsWith("a") || word.endsWith("e")) {
// ending with -o, -a, or -e
word = word.substring(0,len-1);
return word;
}
}
return word;
}
private String removeSpanishAccent (String word)
{
word = word.replaceAll("à|á|â|ä","a");
word = word.replaceAll("ò|ó|ô|ö","o");
word = word.replaceAll("è|é|ê|ë","e");
word = word.replaceAll("ù|ú|û|ü","a");
word = word.replaceAll("ì|í|î|ï","a");
return word;
}
/**
* The main method. // for testing
*/
public static void main(String[] ops) {
SpanishStemmer s = new SpanishStemmer();
System.out.println(s.stem("veces"));
}
}