com.rapidminer.tools.math.similarity
Class DistanceMeasureHelper

java.lang.Object
  com.rapidminer.tools.math.similarity.DistanceMeasureHelper

public class DistanceMeasureHelper
extends java.lang.Object

This helper class installs and uninstalls additional ports at operators that operate on distance measures. It registers itself as an observer of the operator's parameters and instantiates a new DistanceMeasure whenever one of the parameters DistanceMeasures.PARAMETER_MEASURE_TYPES, DistanceMeasures.PARAMETER_MIXED_MEASURE, DistanceMeasures.PARAMETER_NUMERICAL_MEASURE, DistanceMeasures.PARAMETER_NOMINAL_MEASURE, or DistanceMeasures.PARAMETER_DIVERGENCE changes. If the chosen DistanceMeasure overrides DistanceMeasure.installAdditionalPorts(com.rapidminer.operator.ports.InputPorts, com.rapidminer.parameter.ParameterHandler) this may install new ports at the operator. In its Operator.doWork() method, the operator may call getInitializedMeasure(ExampleSet) in order to initialize the distance measure and obtain it. Call this method only once.

Author:

Simon Fischer

Constructor Summary

DistanceMeasureHelper(Operator operator)

Method Summary

DistanceMeasure	getInitializedMeasure(ExampleSet exampleSet)
int	getSelectedMeasureType()

Methods inherited from class java.lang.Object

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

Constructor Detail

DistanceMeasureHelper

public DistanceMeasureHelper(Operator operator)

Method Detail

getInitializedMeasure

public DistanceMeasure getInitializedMeasure(ExampleSet exampleSet)
                                      throws OperatorException

Throws:

OperatorException

getSelectedMeasureType

public int getSelectedMeasureType()
                           throws UndefinedParameterError

Throws:

UndefinedParameterError