opennlp.tools.util.featuregen.WordClusterFeatureGenerator Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package opennlp.tools.util.featuregen;
import java.util.List;
import opennlp.tools.util.StringUtil;
public class WordClusterFeatureGenerator implements AdaptiveFeatureGenerator {
private WordClusterDictionary tokenDictionary;
private String resourceName;
private boolean lowerCaseDictionary;
public WordClusterFeatureGenerator(WordClusterDictionary dict,
String dictResourceKey, boolean lowerCaseDictionary) {
tokenDictionary = dict;
resourceName = dictResourceKey;
this.lowerCaseDictionary = lowerCaseDictionary;
}
public void createFeatures(List features, String[] tokens, int index,
String[] previousOutcomes) {
String clusterId;
if (lowerCaseDictionary) {
clusterId = tokenDictionary.lookupToken(StringUtil.toLowerCase(tokens[index]));
} else {
clusterId = tokenDictionary.lookupToken(tokens[index]);
}
if (clusterId != null) {
features.add(resourceName + clusterId);
}
}
}