de.lmu.ifi.dbs.elki.evaluation.classification.holdout

Class AbstractHoldout

java.lang.Object

de.lmu.ifi.dbs.elki.evaluation.classification.holdout.AbstractHoldout

All Implemented Interfaces:

Holdout

Direct Known Subclasses:

LeaveOneOut, RandomizedHoldout, StratifiedCrossValidation

public abstract class AbstractHoldout
extends Object
implements Holdout

Split a data set for holdout evaluation.

Author:

Erich Schubert

Field Summary

Fields

Modifier and Type	Field and Description
protected MultipleObjectsBundle	bundle Input data bundle.
protected int	labelcol Column containing the class labels.
protected ArrayList<ClassLabel>	labels Labels in the current data set.

Constructor Summary

Constructors

Constructor and Description
AbstractHoldout()

Method Summary

Methods

Modifier and Type	Method and Description
static ArrayList<ClassLabel>	allClassLabels(MultipleObjectsBundle bundle) Get an array of all class labels in a given data set.
static ArrayList<ClassLabel>	allClassLabels(MultipleObjectsBundle bundle, int col) Get an array of all class labels in a given data set.
static int	findClassLabelColumn(MultipleObjectsBundle bundle) Find the class label column in the given data set.
ArrayList<ClassLabel>	getLabels() Get the sorted class labels present in this data set.
void	initialize(MultipleObjectsBundle bundle) Initialize the holdout procedure for a data set.

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.lmu.ifi.dbs.elki.evaluation.classification.holdout.Holdout

nextPartitioning, numberOfPartitions

Field Detail

labels

protected ArrayList<ClassLabel> labels

Labels in the current data set.

labelcol

protected int labelcol

Column containing the class labels.

bundle

protected MultipleObjectsBundle bundle

Input data bundle.

Constructor Detail

AbstractHoldout

public AbstractHoldout()

Method Detail

initialize

public void initialize(MultipleObjectsBundle bundle)

Description copied from interface: Holdout

Initialize the holdout procedure for a data set.

Specified by:

initialize in interface Holdout

Parameters:

bundle - Data set bundle

getLabels

public ArrayList<ClassLabel> getLabels()

Description copied from interface: Holdout

Get the sorted class labels present in this data set. For indexing into assignment arrays.

Specified by:

getLabels in interface Holdout

Returns:

Class labels

findClassLabelColumn

public static int findClassLabelColumn(MultipleObjectsBundle bundle)

Find the class label column in the given data set.

Parameters:

bundle - Bundle

Returns:

Class label column

allClassLabels

public static ArrayList<ClassLabel> allClassLabels(MultipleObjectsBundle bundle)

Get an array of all class labels in a given data set.

Parameters:

bundle - Bundle

Returns:

Class labels.

allClassLabels

public static ArrayList<ClassLabel> allClassLabels(MultipleObjectsBundle bundle,
                                   int col)

Get an array of all class labels in a given data set.

Parameters:

bundle - Bundle

col - Column

Returns:

Class labels.