de.viadee.discretizers4j

Class AbstractDiscretizer

java.lang.Object

de.viadee.discretizers4j.AbstractDiscretizer

All Implemented Interfaces:

Discretizer, Serializable, Function<Serializable,Double>

Direct Known Subclasses:

AbstractSupervisedDiscretizer, EqualSizeDiscretizer, ManualDiscretizer, PercentileMedianDiscretizer, RandomDiscretizer, UniqueValueDiscretizer

public abstract class AbstractDiscretizer
extends Object
implements Discretizer

Abstract discretizer managing both the discretization and un-discretization for all discretizers that choose to work with the DiscretizationTransition

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractDiscretizer(boolean isSupervised) Constructs the instance

Method Summary

Modifier and Type	Method and Description
Double	apply(Serializable serializable)
void	fit(Serializable[] values) Fits the discretizer and passes all values that it might get asked to discretize
void	fit(Serializable[] values, Double[] labels) Fits the discretizer and passes all values that it might get asked to discretize
protected abstract List<DiscretizationTransition>	fitCreateTransitions(Serializable[] values, Double[] labels) Fits on the data
protected List<DiscretizationTransition>	getDiscretizationTransitionsFromCutPoints(List<Double> actualCutPoints, Double min, Double max)
Collection<DiscretizationTransition>	getTransitions() This method returns all stored transitions

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.viadee.discretizers4j.Discretizer

apply, getTransition

Methods inherited from interface java.util.function.Function

andThen, compose, identity

Constructor Detail

AbstractDiscretizer

protected AbstractDiscretizer(boolean isSupervised)

Constructs the instance

Parameters:

isSupervised - true, if this is a supervised discretizer

Method Detail

getTransitions

public Collection<DiscretizationTransition> getTransitions()

Description copied from interface: Discretizer

This method returns all stored transitions

Specified by:

getTransitions in interface Discretizer

Returns:

the DiscretizationTransitions

fit

public void fit(Serializable[] values)

Fits the discretizer and passes all values that it might get asked to discretize

Parameters:

values - the domain

fit

public void fit(Serializable[] values,
                Double[] labels)

Description copied from interface: Discretizer

Fits the discretizer and passes all values that it might get asked to discretize

Specified by:

fit in interface Discretizer

Parameters:

values - the domain

labels - the labels or null, iff unsupervised. Caution: labels are required to be discretized first

fitCreateTransitions

protected abstract List<DiscretizationTransition> fitCreateTransitions(Serializable[] values,
                                                                       Double[] labels)

Fits on the data

Parameters:

values - the values to be fitted on

labels - the labels. != null, iff supervised

Returns:

a Collection containing the DiscretizationTransitions

apply

public Double apply(Serializable serializable)

Specified by:

apply in interface Function<Serializable,Double>

getDiscretizationTransitionsFromCutPoints

protected final List<DiscretizationTransition> getDiscretizationTransitionsFromCutPoints(List<Double> actualCutPoints,
                                                                                         Double min,
                                                                                         Double max)