/*
* 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.sentdetect;
import java.io.File;
import java.io.IOException;
import opennlp.tools.cmdline.CLI;
import opennlp.tools.cmdline.CmdLineTool;
import opennlp.tools.cmdline.CmdLineUtil;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.sentdetect.SDCrossValidator;
import opennlp.tools.sentdetect.SentenceSample;
import opennlp.tools.util.ObjectStream;
import opennlp.tools.util.eval.FMeasure;
public final class SentenceDetectorCrossValidatorTool implements CmdLineTool {
public String getName() {
return "SentenceDetectorCrossValidator";
}
public String getShortDescription() {
return "10-fold cross validator for the learnable sentence detector";
}
public String getHelp() {
return "Usage: " + CLI.CMD + " " + getName() + " " + TrainingParameters.getParameterUsage() +
" -data trainData\n" +
TrainingParameters.getDescription();
}
public void run(String[] args) {
if (args.length < 5) {
System.out.println(getHelp());
throw new TerminateToolException(1);
}
TrainingParameters parameters = new TrainingParameters(args);
if(!parameters.isValid()) {
System.out.println(getHelp());
throw new TerminateToolException(1);
}
File trainingDataInFile = new File(CmdLineUtil.getParameter("-data", args));
CmdLineUtil.checkInputFile("Training Data", trainingDataInFile);
ObjectStream<SentenceSample> sampleStream = SentenceDetectorTrainerTool.openSampleData("Training Data",
trainingDataInFile, parameters.getEncoding());
SDCrossValidator validator = new SDCrossValidator(parameters.getLanguage(), parameters.getCutoff(), parameters.getNumberOfIterations());
try {
validator.evaluate(sampleStream, 10);
}
catch (IOException e) {
CmdLineUtil.printTrainingIoError(e);
throw new TerminateToolException(-1);
}
finally {
try {
sampleStream.close();
} catch (IOException e) {
// sorry that this can fail
}
}
FMeasure result = validator.getFMeasure();
System.out.println(result.toString());
}
}