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* 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,
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* See the License for the specific language governing permissions and
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package opennlp.tools.ml.maxent;
import java.io.IOException;
import java.util.HashMap;
import org.junit.Before;
import org.junit.Test;
import opennlp.tools.ml.AbstractEventTrainer;
import opennlp.tools.ml.AbstractTrainer;
import opennlp.tools.ml.EventTrainer;
import opennlp.tools.ml.PrepAttachDataUtil;
import opennlp.tools.ml.TrainerFactory;
import opennlp.tools.ml.model.AbstractDataIndexer;
import opennlp.tools.ml.model.AbstractModel;
import opennlp.tools.ml.model.DataIndexer;
import opennlp.tools.ml.model.MaxentModel;
import opennlp.tools.ml.model.TwoPassDataIndexer;
import opennlp.tools.ml.model.UniformPrior;
import opennlp.tools.util.TrainingParameters;
public class MaxentPrepAttachTest {
private DataIndexer testDataIndexer;
@Before
public void initIndexer() {
TrainingParameters trainingParameters = new TrainingParameters();
trainingParameters.put(AbstractTrainer.CUTOFF_PARAM, 1);
trainingParameters.put(AbstractDataIndexer.SORT_PARAM, false);
testDataIndexer = new TwoPassDataIndexer();
testDataIndexer.init(trainingParameters, new HashMap<>());
}
@Test
public void testMaxentOnPrepAttachData() throws IOException {
testDataIndexer.index(PrepAttachDataUtil.createTrainingStream());
// this shows why the GISTrainer should be a AbstractEventTrainer.
// TODO: make sure that the trainingParameter cutoff and the
// cutoff value passed here are equal.
AbstractModel model =
new GISTrainer(true).trainModel(100,
testDataIndexer,
new UniformPrior(), 1);
PrepAttachDataUtil.testModel(model, 0.7997028967566229);
}
@Test
public void testMaxentOnPrepAttachData2Threads() throws IOException {
testDataIndexer.index(PrepAttachDataUtil.createTrainingStream());
AbstractModel model =
new GISTrainer(true).trainModel(100,
testDataIndexer,
new UniformPrior(), 2);
PrepAttachDataUtil.testModel(model, 0.7997028967566229);
}
@Test
public void testMaxentOnPrepAttachDataWithParams() throws IOException {
TrainingParameters trainParams = new TrainingParameters();
trainParams.put(AbstractTrainer.ALGORITHM_PARAM, GISTrainer.MAXENT_VALUE);
trainParams.put(AbstractEventTrainer.DATA_INDEXER_PARAM,
AbstractEventTrainer.DATA_INDEXER_TWO_PASS_VALUE);
trainParams.put(AbstractTrainer.CUTOFF_PARAM, 1);
EventTrainer trainer = TrainerFactory.getEventTrainer(trainParams, null);
MaxentModel model = trainer.train(PrepAttachDataUtil.createTrainingStream());
PrepAttachDataUtil.testModel(model, 0.7997028967566229);
}
@Test
public void testMaxentOnPrepAttachDataWithParamsDefault() throws IOException {
TrainingParameters trainParams = new TrainingParameters();
trainParams.put(AbstractTrainer.ALGORITHM_PARAM, GISTrainer.MAXENT_VALUE);
EventTrainer trainer = TrainerFactory.getEventTrainer(trainParams, null);
MaxentModel model = trainer.train(PrepAttachDataUtil.createTrainingStream());
PrepAttachDataUtil.testModel(model, 0.8086159940579352 );
}
}