| /* |
| * 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.coref.resolver; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import opennlp.tools.coref.DiscourseEntity; |
| import opennlp.tools.coref.mention.MentionContext; |
| |
| /** |
| * Resolves coreference between definite noun-phrases. |
| */ |
| public class DefiniteNounResolver extends MaxentResolver { |
| |
| public DefiniteNounResolver(String projectName, ResolverMode m) throws IOException { |
| super(projectName, "defmodel", m, 80); |
| //preferFirstReferent = true; |
| } |
| |
| public DefiniteNounResolver(String projectName, ResolverMode m, NonReferentialResolver nrr) throws IOException { |
| super(projectName, "defmodel", m, 80,nrr); |
| //preferFirstReferent = true; |
| } |
| |
| |
| public boolean canResolve(MentionContext mention) { |
| Object[] mtokens = mention.getTokens(); |
| |
| String firstTok = mention.getFirstTokenText().toLowerCase(); |
| boolean rv = mtokens.length > 1 && !mention.getHeadTokenTag().startsWith("NNP") && ResolverUtils.definiteArticle(firstTok, mention.getFirstTokenTag()); |
| //if (rv) { |
| // System.err.println("defNp "+ec); |
| //} |
| return (rv); |
| } |
| |
| @Override |
| protected List<String> getFeatures(MentionContext mention, DiscourseEntity entity) { |
| List<String> features = new ArrayList<String>(); |
| features.addAll(super.getFeatures(mention, entity)); |
| if (entity != null) { |
| features.addAll(ResolverUtils.getContextFeatures(mention)); |
| features.addAll(ResolverUtils.getStringMatchFeatures(mention,entity)); |
| features.addAll(ResolverUtils.getDistanceFeatures(mention,entity)); |
| } |
| return (features); |
| } |
| } |