| /* |
| * 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.Arrays; |
| import java.util.List; |
| |
| import opennlp.tools.namefind.AuxiliaryInfoUtil; |
| |
| /** |
| * If a token contains an auxiliary information, e.g. POS tag, in the training data, |
| * you can use this feature generator in order to let the feature generator choose |
| * word part or auxiliary information part.<br> |
| * |
| * ex) token := word '/' POStag |
| * |
| * <strong>EXPERIMENTAL</strong>. |
| * This class has been added as part of a work in progress and might change without notice. |
| */ |
| public class AuxiliaryInfoAwareDelegateFeatureGenerator implements AdaptiveFeatureGenerator { |
| |
| private String[] cachedWordAndAuxes; |
| private String[] cached; |
| |
| private final AdaptiveFeatureGenerator generator; |
| private final boolean useAux; |
| |
| public AuxiliaryInfoAwareDelegateFeatureGenerator(AdaptiveFeatureGenerator generator, boolean useAux) { |
| this.generator = generator; |
| this.useAux = useAux; |
| } |
| |
| @Override |
| public void createFeatures(List<String> features, String[] wordAndAuxes, int index, |
| String[] previousOutcomes) { |
| if (useAux) { |
| if (!Arrays.equals(cachedWordAndAuxes, wordAndAuxes)) { |
| cachedWordAndAuxes = wordAndAuxes; |
| cached = AuxiliaryInfoUtil.getAuxParts(wordAndAuxes); |
| } |
| } |
| else { |
| if (!Arrays.equals(cachedWordAndAuxes, wordAndAuxes)) { |
| cachedWordAndAuxes = wordAndAuxes; |
| cached = AuxiliaryInfoUtil.getWordParts(wordAndAuxes); |
| } |
| } |
| generator.createFeatures(features, cached, index, previousOutcomes); |
| } |
| } |