| /* |
| * 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.formats.muc; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import opennlp.tools.chunker.Chunker; |
| import opennlp.tools.parser.AbstractBottomUpParser; |
| import opennlp.tools.parser.Parse; |
| import opennlp.tools.postag.POSTagger; |
| import opennlp.tools.util.FilterObjectStream; |
| import opennlp.tools.util.ObjectStream; |
| import opennlp.tools.util.Span; |
| |
| public class ShallowParseCorefEnhancerStream extends FilterObjectStream<RawCorefSample, RawCorefSample> { |
| |
| private final POSTagger posTagger; |
| private final Chunker chunker; |
| |
| public ShallowParseCorefEnhancerStream(POSTagger posTagger, Chunker chunker, |
| ObjectStream<RawCorefSample> samples) { |
| super(samples); |
| this.posTagger = posTagger; |
| this.chunker = chunker; |
| } |
| |
| public RawCorefSample read() throws IOException { |
| |
| RawCorefSample sample = samples.read(); |
| |
| if (sample != null) { |
| |
| List<Parse> enhancedParses = new ArrayList<Parse>(); |
| |
| List<String[]> sentences = sample.getTexts(); |
| |
| for (String[] sentence : sentences) { |
| |
| Parse p = FullParseCorefEnhancerStream.createIncompleteParse(sentence); |
| p.setType(AbstractBottomUpParser.TOP_NODE); |
| |
| Parse[] parseTokens = p.getChildren(); |
| |
| // construct incomplete parse here .. |
| String[] tags = posTagger.tag(sentence); |
| |
| for (int i = 0; i < parseTokens.length; i++) { |
| p.insert(new Parse(p.getText(), parseTokens[i].getSpan(), tags[i], |
| 1d, parseTokens[i].getHeadIndex())); |
| } |
| |
| // insert tags into incomplete parse |
| Span[] chunks = chunker.chunkAsSpans(sentence, tags); |
| |
| for (Span chunk : chunks) { |
| if ("NP".equals(chunk.getType())) { |
| p.insert(new Parse(p.getText(), new Span(0,0), chunk.getType(), 1d, p.getHeadIndex())); |
| } |
| } |
| |
| enhancedParses.add(p); |
| } |
| |
| sample.setParses(enhancedParses); |
| |
| return sample; |
| } |
| else { |
| return null; |
| } |
| } |
| } |