ai.libs.jaicore.ml.dyadranking.util

Class DyadMinMaxScaler

java.lang.Object

ai.libs.jaicore.ml.dyadranking.util.AbstractDyadScaler

ai.libs.jaicore.ml.dyadranking.util.DyadMinMaxScaler

All Implemented Interfaces:

java.io.Serializable

public class DyadMinMaxScaler
extends AbstractDyadScaler

A scaler that can be fit to a certain dataset and then be used to normalize dyad datasets, i.e. transform the data such that the values of each feature lie between 0 and 1. For feature x: x = x - x_min / (x_max - x_min)

See Also:

Serialized Form

Field Summary

Fields inherited from class ai.libs.jaicore.ml.dyadranking.util.AbstractDyadScaler

statsX, statsY

Constructor Summary

Constructors

Constructor and Description
DyadMinMaxScaler()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getPrettyMaximaString() Returns a String the maxima of all features this scaler has been fit to.
java.lang.String	getPrettyMinimaString() Returns a String for the minima of all features this scaler has been fit to.
void	transformAlternatives(Dyad dyad, java.util.List<java.lang.Integer> ignoredIndices) Transforms only the alternatives of each dyad according to the mean and standard deviation of the data the scaler has been fit to.
void	transformInstaceVector(ai.libs.jaicore.math.linearalgebra.Vector vector, java.util.List<java.lang.Integer> ignoredIndices) Transforms an instance feature vector.
void	transformInstances(Dyad dyad, java.util.List<java.lang.Integer> ignoredIndices) Transforms only the instances of each dyad according to the mean and standard deviation of the data the scaler has been fit to.
void	untransform(DyadRankingDataset dataset)
void	untransformAlternative(Dyad dyad) Undoes the transformation on the alternative of a single dyad.
void	untransformAlternative(Dyad dyad, int decimals) Undoes the transformation on the alternative of a single dyad.
void	untransformAlternatives(DyadRankingDataset dataset) Undoes the transformation of the alternatives of each dyad.
void	untransformAlternatives(DyadRankingDataset dataset, int decimals) Undoes the transformation of the alternatives of each dyad.
void	untransformInstance(Dyad dyad) Undoes the transformation of the instance of a single dyad.
void	untransformInstance(Dyad dyad, int decimals) Undoes the transformation of the instance of a single dyad.
void	untransformInstances(DyadRankingDataset dataset) Undoes the transformation of the instances of each dyad.
void	untransformInstances(DyadRankingDataset dataset, int decimals) Undoes the transformation of the instances of each dyad.

Methods inherited from class ai.libs.jaicore.ml.dyadranking.util.AbstractDyadScaler

fit, fitTransform, getPrettyMeansString, getPrettySTDString, getStatsX, getStatsY, transform, transformAlternatives, transformAlternatives, transformAlternatives, transformInstances, transformInstances, transformInstances, transformInstances

Methods inherited from class java.lang.Object

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

Constructor Detail

DyadMinMaxScaler

public DyadMinMaxScaler()

Method Detail

untransform

public void untransform(DyadRankingDataset dataset)

untransformInstances

public void untransformInstances(DyadRankingDataset dataset)

Undoes the transformation of the instances of each dyad.

Parameters:

dataset -

untransformInstances

public void untransformInstances(DyadRankingDataset dataset,
                                 int decimals)

Undoes the transformation of the instances of each dyad.

Parameters:

dataset -

decimals - number of decimal places for rounding

untransformInstance

public void untransformInstance(Dyad dyad)

Undoes the transformation of the instance of a single dyad.

Parameters:

dyad -

untransformInstance

public void untransformInstance(Dyad dyad,
                                int decimals)

Undoes the transformation of the instance of a single dyad.

Parameters:

dyad -

decimals - number of decimal places for rounding

untransformAlternatives

public void untransformAlternatives(DyadRankingDataset dataset)

Undoes the transformation of the alternatives of each dyad.

Parameters:

dataset -

untransformAlternatives

public void untransformAlternatives(DyadRankingDataset dataset,
                                    int decimals)

Undoes the transformation of the alternatives of each dyad.

Parameters:

dataset -

decimals - number of de

untransformAlternative

public void untransformAlternative(Dyad dyad)

Undoes the transformation on the alternative of a single dyad.

Parameters:

dyad -

untransformAlternative

public void untransformAlternative(Dyad dyad,
                                   int decimals)

Undoes the transformation on the alternative of a single dyad.

Parameters:

dyad -

getPrettyMaximaString

public java.lang.String getPrettyMaximaString()

Returns a String the maxima of all features this scaler has been fit to.

getPrettyMinimaString

public java.lang.String getPrettyMinimaString()

Returns a String for the minima of all features this scaler has been fit to.

transformInstances

public void transformInstances(Dyad dyad,
                               java.util.List<java.lang.Integer> ignoredIndices)

Description copied from class: AbstractDyadScaler

Transforms only the instances of each dyad according to the mean and standard deviation of the data the scaler has been fit to. The attributes with indices contained in ignoredIndices are not transformed. {

Specified by:

transformInstances in class AbstractDyadScaler

ignoredIndices - The List of indices that are been ignored by the scaler.

transformAlternatives

public void transformAlternatives(Dyad dyad,
                                  java.util.List<java.lang.Integer> ignoredIndices)

Description copied from class: AbstractDyadScaler

Transforms only the alternatives of each dyad according to the mean and standard deviation of the data the scaler has been fit to.

Specified by:

transformAlternatives in class AbstractDyadScaler

ignoredIndices - The List of indices that are been ignored by the scaler.

transformInstaceVector

public void transformInstaceVector(ai.libs.jaicore.math.linearalgebra.Vector vector,
                                   java.util.List<java.lang.Integer> ignoredIndices)

Description copied from class: AbstractDyadScaler

Transforms an instance feature vector.

Specified by:

transformInstaceVector in class AbstractDyadScaler