Package adaa.analytics.rules.logic.performance

Class MultiClassificationPerformance

java.lang.Object

adaa.analytics.rules.logic.performance.AbstractPerformanceCounter

adaa.analytics.rules.logic.performance.MultiClassificationPerformance

public class MultiClassificationPerformance
extends AbstractPerformanceCounter

Measures the accuracy and classification error for both binary classification problems and multi class problems. Additionally, this performance criterion can also compute the kappa statistics for multi class problems. This is calculated as k = (P(A) - P(E)) / (1 - P(E)) with [ P(A) = diagonal sum / number of examples ] and [ P(E) = sum over i of ((sum of i-th row * sum of i-th column) / (n to the power of 2) ].

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ACCURACY	Indicates accuracy.
static final int	ERROR	Indicates classification error.
static final int	KAPPA	Indicates kappa statistics.
static final String[]	NAMES	The names of the criteria.

Constructor Summary

Constructors

Constructor	Description
MultiClassificationPerformance(int type)	Creates a MultiClassificationPerformance with the given type.

Method Summary

Modifier and Type	Method	Description
PerformanceResult	countExample(IExampleSet eSet)	Initializes the criterion and sets the label.
double	countResultValue()

Methods inherited from class java.lang.Object

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

Field Details

ACCURACY

public static final int ACCURACY

Indicates accuracy.

See Also:

• Constant Field Values

ERROR

public static final int ERROR

Indicates classification error.

See Also:

• Constant Field Values

KAPPA

public static final int KAPPA

Indicates kappa statistics.

See Also:

• Constant Field Values

NAMES

public static final String[] NAMES

The names of the criteria.

Constructor Details

MultiClassificationPerformance

public MultiClassificationPerformance(int type)

Creates a MultiClassificationPerformance with the given type.

Method Details

countExample

public PerformanceResult countExample(IExampleSet eSet)

Initializes the criterion and sets the label.

Specified by:

countExample in class AbstractPerformanceCounter

countResultValue

public double countResultValue()