1 package org.apache.lucene.analysis.sv;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
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14 * distributed under the License is distributed on an "AS IS" BASIS,
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21 * This algorithm is updated based on code located at:
22 * http://members.unine.ch/jacques.savoy/clef/
24 * Full copyright for that code follows:
28 * Copyright (c) 2005, Jacques Savoy
29 * All rights reserved.
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32 * modification, are permitted provided that the following conditions are met:
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40 * this software without specific prior written permission.
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55 import static org.apache.lucene.analysis.util.StemmerUtil.*;
58 * Light Stemmer for Swedish.
60 * This stemmer implements the algorithm described in:
61 * <i>Report on CLEF-2003 Monolingual Tracks</i>
64 public class SwedishLightStemmer {
66 public int stem(char s[], int len) {
67 if (len > 4 && s[len-1] == 's')
71 (endsWith(s, len, "elser") ||
72 endsWith(s, len, "heten")))
76 (endsWith(s, len, "arne") ||
77 endsWith(s, len, "erna") ||
78 endsWith(s, len, "ande") ||
79 endsWith(s, len, "else") ||
80 endsWith(s, len, "aste") ||
81 endsWith(s, len, "orna") ||
82 endsWith(s, len, "aren")))
86 (endsWith(s, len, "are") ||
87 endsWith(s, len, "ast") ||
88 endsWith(s, len, "het")))
92 (endsWith(s, len, "ar") ||
93 endsWith(s, len, "er") ||
94 endsWith(s, len, "or") ||
95 endsWith(s, len, "en") ||
96 endsWith(s, len, "at") ||
97 endsWith(s, len, "te") ||
98 endsWith(s, len, "et")))
106 case 'n': return len - 1;