edu.cmu.minorthird.classify.experiments
Class CrossValSplitter<T>

java.lang.Object
  edu.cmu.minorthird.classify.experiments.CrossValSplitter<T>

All Implemented Interfaces:

Splitter<T>

public class CrossValSplitter<T>
extends java.lang.Object
implements Splitter<T>

Split into k separate disjoint folds, then return k train/test splits where each train set is the union of k-1 folds, and the test set is the k-th fold. Preserves subpopulation information.

Author:

William Cohen

Constructor Summary

CrossValSplitter()

CrossValSplitter(int folds)

CrossValSplitter(java.util.Random random, int folds)

Method Summary

int	getNumberOfFolds()
int	getNumPartitions() Return the number of partitions produced by the last call to split()
java.util.Iterator<T>	getTest(int k) Return an iterator over the test cases in the k-th split.
java.util.Iterator<T>	getTrain(int k) Return an iterator over the training cases in the k-th split.
void	setNumberOfFolds(int k)
void	split(java.util.Iterator<T> i) Split the iterator into a number of train/test partitions.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CrossValSplitter

public CrossValSplitter(java.util.Random random,
                        int folds)

CrossValSplitter

public CrossValSplitter(int folds)

CrossValSplitter

public CrossValSplitter()

Method Detail

getNumberOfFolds

public int getNumberOfFolds()

setNumberOfFolds

public void setNumberOfFolds(int k)

split

public void split(java.util.Iterator<T> i)

Description copied from interface: Splitter

Split the iterator into a number of train/test partitions.

Specified by:

split in interface Splitter<T>

getNumPartitions

public int getNumPartitions()

Description copied from interface: Splitter

Return the number of partitions produced by the last call to split()

Specified by:

getNumPartitions in interface Splitter<T>

getTrain

public java.util.Iterator<T> getTrain(int k)

Description copied from interface: Splitter

Return an iterator over the training cases in the k-th split.

Specified by:

getTrain in interface Splitter<T>

getTest

public java.util.Iterator<T> getTest(int k)

Description copied from interface: Splitter

Return an iterator over the test cases in the k-th split.

Specified by:

getTest in interface Splitter<T>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object