RandomizedCrossValidation (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.evaluation.classification.holdout.AbstractHoldout
- - elki.evaluation.classification.holdout.RandomizedHoldout
  - - elki.evaluation.classification.holdout.RandomizedCrossValidation

All Implemented Interfaces:

Holdout
```
public class RandomizedCrossValidation
extends RandomizedHoldout
```
RandomizedCrossValidation provides a set of partitions of a database to perform cross-validation. The test sets are not guaranteed to be disjoint.

Since:

0.7.0

Author:

Arthur Zimek

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class RandomizedCrossValidation.Par
Parameterization class

Field Summary

Fields
Modifier and Type Field Description

protected int fold
Holds the number of folds, current fold.

protected int nfold
Holds the number of folds, current fold.
- Fields inherited from class elki.evaluation.classification.holdout.RandomizedHoldout
  random
- Fields inherited from class elki.evaluation.classification.holdout.AbstractHoldout
  bundle, labelcol, labels

Constructor Summary

Constructors
Constructor Description

RandomizedCrossValidation(RandomFactory random, int nfold)
Constructor for n-fold cross-validation.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`initialize(MultipleObjectsBundle bundle)`	Initialize the holdout procedure for a data set.
`TrainingAndTestSet`	`nextPartitioning()`	Get the next partitioning of the given holdout.
`int`	`numberOfPartitions()`	How many partitions to test.

Methods inherited from class elki.evaluation.classification.holdout.AbstractHoldout
allClassLabels, allClassLabels, findClassLabelColumn, getLabels

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - nfold
```
protected int nfold
```
    Holds the number of folds, current fold.
  - fold
```
protected int fold
```
    Holds the number of folds, current fold.
- Constructor Detail
  - RandomizedCrossValidation
```
public RandomizedCrossValidation(RandomFactory random,
                                 int nfold)
```
    Constructor for n-fold cross-validation.
    
    Parameters:
    
    random - Random seed
    
    nfold - Number of folds
- 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
    
    Overrides:
    
    initialize in class AbstractHoldout
    
    Parameters:
    
    bundle - Data set bundle
  - numberOfPartitions
```
public int numberOfPartitions()
```
    Description copied from interface: Holdout
    
    How many partitions to test.
    
    Returns:
    
    Number of partitions.
  - nextPartitioning
```
public TrainingAndTestSet nextPartitioning()
```
    Description copied from interface: Holdout
    
    Get the next partitioning of the given holdout.
    
    Returns:
    
    Next partitioning of the data set