Package opennlp.tools.cmdline.parser

Source Code of opennlp.tools.cmdline.parser.ParserEvaluatorTool

/*
* 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 opennlp.tools.cmdline.AbstractEvaluatorTool;
import opennlp.tools.cmdline.TerminateToolException;
import opennlp.tools.cmdline.params.EvaluatorParams;
import opennlp.tools.parser.Parse;
import opennlp.tools.parser.Parser;
import opennlp.tools.parser.ParserEvaluator;
import opennlp.tools.parser.ParserFactory;
import opennlp.tools.parser.ParserModel;

public class ParserEvaluatorTool extends AbstractEvaluatorTool<Parse, EvaluatorParams> {

  public ParserEvaluatorTool() {
    super(Parse.class, EvaluatorParams.class);
  }
 
  public String getShortDescription() {
    return "Measures the performance of the Parser model with the reference data";
  }

  @Override
  public void run(String format, String[] args) {

    super.run(format, args);

    ParserModel model = new ParserModelLoader().load(params.getModel());

    Parser parser = ParserFactory.create(model);

    ParserEvaluator evaluator = new ParserEvaluator(parser);

    System.out.print("Evaluating ... ");
    try {
      evaluator.evaluate(sampleStream);
    }
    catch (IOException e) {
      System.err.println("failed");
      throw new TerminateToolException(-1, "IO error while reading test data: " + e.getMessage(), e);
    } finally {
      try {
        sampleStream.close();
      } catch (IOException e) {
        // sorry that this can fail
      }
    }
    System.out.println("done");

    System.out.println();

    System.out.println(evaluator.getFMeasure());
  }
}
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