adams.flow.core
Class EvaluationHelper

java.lang.Object
  adams.flow.core.EvaluationHelper

public class EvaluationHelper
extends Object

A helper class for Evaluation related things.

Version:

$Revision: 5637 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

Constructor Summary

EvaluationHelper()

Method Summary

static double

getValue(weka.classifiers.Evaluation eval, EvaluationStatistic statistic, int classIndex) Returns a statistical value from the evaluation object.

Methods inherited from class java.lang.Object

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

Constructor Detail

EvaluationHelper

public EvaluationHelper()

Method Detail

getValue

public static double getValue(weka.classifiers.Evaluation eval,
                              EvaluationStatistic statistic,
                              int classIndex)
                       throws Exception

Returns a statistical value from the evaluation object.

Parameters:

eval - the evaluation object to get the value from

statistic - the type of value to return

classIndex - the class label index, for statistics like AUC

Returns:

the determined value, Double.NaN if not found

Throws:

Exception - if evaluation fails