com.rapidminer.operator.learner.subgroups.utility
Class Precision

java.lang.Object
  com.rapidminer.operator.learner.subgroups.utility.UtilityFunction
      com.rapidminer.operator.learner.subgroups.utility.Precision

All Implemented Interfaces:

java.io.Serializable

public class Precision
extends UtilityFunction

Calculates the precision of a rule.

Author:

Tobias Malbrecht

See Also:

Serialized Form

Field Summary

Fields inherited from class com.rapidminer.operator.learner.subgroups.utility.UtilityFunction

ACCURACY, BIAS, BINOMIAL, COVERAGE, FUNCTIONS, LIFT, NEGATIVE_CLASS, ODDS, ODDS_RATIO, POSITIVE_CLASS, PRECISION, SQUARED, totalNegativeWeight, totalPositiveWeight, totalWeight, WRACC

Constructor Summary

Precision(double totalWeight, double totalPositiveWeight)

Method Summary

java.lang.String	getAbbreviation()
java.lang.String	getName()
double	optimisticEstimate(Hypothesis hypothesis)
double	utility(Rule rule)

Methods inherited from class com.rapidminer.operator.learner.subgroups.utility.UtilityFunction

getTotalNegativeWeight, getTotalPositiveWeight, getTotalWeight, getUtilityFunction, getUtilityFunctionClass, getUtilityFunctionClasses, getUtilityFunctions, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Precision

public Precision(double totalWeight,
                 double totalPositiveWeight)

Method Detail

utility

public double utility(Rule rule)

Specified by:

utility in class UtilityFunction

optimisticEstimate

public double optimisticEstimate(Hypothesis hypothesis)

Specified by:

optimisticEstimate in class UtilityFunction

getName

public java.lang.String getName()

Specified by:

getName in class UtilityFunction

getAbbreviation

public java.lang.String getAbbreviation()

Specified by:

getAbbreviation in class UtilityFunction