Package opennlp.tools.parser

Class ParserCrossValidator

java.lang.Object
opennlp.tools.parser.ParserCrossValidator
public class ParserCrossValidator extends Object
Cross validator for a Parser.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ParserCrossValidator(String languageCode, opennlp.tools.util.TrainingParameters params, opennlp.tools.parser.HeadRules rules, opennlp.tools.parser.ParserType parserType, opennlp.tools.parser.ParserEvaluationMonitor... monitors)
    Initializes a ParserCrossValidator instance via given parameters.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    evaluate(opennlp.tools.util.ObjectStream<opennlp.tools.parser.Parse> samples, int nFolds)
    Starts the evaluation.
    opennlp.tools.util.eval.FMeasure
    getFMeasure()
     

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • ParserCrossValidator

      public ParserCrossValidator(String languageCode, opennlp.tools.util.TrainingParameters params, opennlp.tools.parser.HeadRules rules, opennlp.tools.parser.ParserType parserType, opennlp.tools.parser.ParserEvaluationMonitor... monitors)
      Initializes a ParserCrossValidator instance via given parameters.
      Parameters:
      languageCode - An ISO conform language code.
      params - The TrainingParameters for the context of cross validation.
      rules - The HeadRules for the context of cross validation.
      parserType - The ParserType for the context of cross validation.
      monitors - the evaluation listeners.

  • Method Details

    • evaluate

      public void evaluate(opennlp.tools.util.ObjectStream<opennlp.tools.parser.Parse> samples, int nFolds) throws IOException
      Starts the evaluation.
      Parameters:
      samples - The ObjectStream of samples to train and test with.
      nFolds - Number of folds. It must be greater than zero.
      Throws:
      IOException - Thrown if IO errors occurred.
      IllegalStateException - Thrown if the currently active ParserType is not supported.

    • getFMeasure

      public opennlp.tools.util.eval.FMeasure getFMeasure()