| /* |
| * 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.cmdline.parser; |
| |
| import java.io.IOException; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import opennlp.tools.dictionary.Dictionary; |
| import opennlp.tools.ml.EventTrainer; |
| import opennlp.tools.ml.TrainerFactory; |
| import opennlp.tools.ml.model.Event; |
| import opennlp.tools.ml.model.MaxentModel; |
| import opennlp.tools.parser.Parse; |
| import opennlp.tools.parser.ParserEventTypeEnum; |
| import opennlp.tools.parser.ParserModel; |
| import opennlp.tools.parser.chunking.ParserEventStream; |
| import opennlp.tools.util.ObjectStream; |
| import opennlp.tools.util.model.ModelUtil; |
| |
| /** |
| * Trains a new check model. |
| */ |
| public final class CheckModelUpdaterTool extends ModelUpdaterTool { |
| |
| private static final Logger logger = LoggerFactory.getLogger(CheckModelUpdaterTool.class); |
| |
| @Override |
| public String getShortDescription() { |
| return "Trains and updates the check model in a parser model"; |
| } |
| |
| @Override |
| protected ParserModel trainAndUpdate(ParserModel originalModel, |
| ObjectStream<Parse> parseSamples, ModelUpdaterParams parameters) |
| throws IOException { |
| |
| Dictionary mdict = ParserTrainerTool.buildDictionary(parseSamples, originalModel.getHeadRules(), 5); |
| |
| parseSamples.reset(); |
| |
| // TODO: Maybe that should be part of the ChunkingParser ... |
| // Training build |
| logger.info("Training check model"); |
| ObjectStream<Event> bes = new ParserEventStream(parseSamples, |
| originalModel.getHeadRules(), ParserEventTypeEnum.CHECK, mdict); |
| |
| EventTrainer trainer = TrainerFactory.getEventTrainer( |
| ModelUtil.createDefaultTrainingParameters(), null); |
| MaxentModel checkModel = trainer.train(bes); |
| |
| parseSamples.close(); |
| |
| return originalModel.updateCheckModel(checkModel); |
| } |
| } |