org.grouplens.lenskit.eval.data.crossfold

Class FractionPartition<E>

java.lang.Object

org.grouplens.lenskit.eval.data.crossfold.FractionPartition<E>

Type Parameters:

E -

All Implemented Interfaces:

PartitionAlgorithm<E>

public class FractionPartition<E>
extends Object
implements PartitionAlgorithm<E>

Partition a list by fraction.

Constructor Summary

Constructors

Constructor and Description
FractionPartition(double f) The fraction to hold out (put in the second partition).

Method Summary

Modifier and Type	Method and Description
int	partition(List<E> data) Compute a partition of some data.

Methods inherited from class java.lang.Object

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

Constructor Detail

FractionPartition

public FractionPartition(double f)

The fraction to hold out (put in the second partition).

Parameters:

f - The fraction of users to hold out.

Method Detail

partition

public int partition(List<E> data)

Description copied from interface: PartitionAlgorithm

Compute a partition of some data.

Specified by:

partition in interface PartitionAlgorithm<E>

Parameters:

data - The data to partition.

Returns:

The index of the start of the second partition.