org.grouplens.lenskit.eval.data.crossfold

Class HoldoutNPartition<E>

java.lang.Object

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

Type Parameters:

E -

All Implemented Interfaces:

PartitionAlgorithm<E>

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

Partition the last part of list by holding out a fixed number of elements.

Constructor Summary

Constructors

Constructor and Description
HoldoutNPartition(int n) Create a count partitioner.

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

HoldoutNPartition

public HoldoutNPartition(int n)

Create a count partitioner.

Parameters:

n - The number of items to put in the second partition.

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.