org.lenskit.eval.crossfold

Class CrossfoldMethods

java.lang.Object

org.lenskit.eval.crossfold.CrossfoldMethods

public final class CrossfoldMethods
extends Object

Method Summary

Modifier and Type	Method and Description
static CrossfoldMethod	partitionEntities() Create a crossfold method that partitions ratings into disjoint partitions.
static CrossfoldMethod	partitionUsers(SortOrder order, HistoryPartitionMethod part) Create a crossfold method that splits users into disjoint partitions.
static CrossfoldMethod	sampleUsers(SortOrder order, HistoryPartitionMethod part, int size) Create a crossfold method that splits users into disjoint samples.

Methods inherited from class java.lang.Object

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

Method Detail

partitionUsers

public static CrossfoldMethod partitionUsers(SortOrder order,
                                             HistoryPartitionMethod part)

Create a crossfold method that splits users into disjoint partitions.

Parameters:

order - The ordering for user rating partitions.

part - the partition algorithm for user ratings.

Returns:

The crossfold method.

sampleUsers

public static CrossfoldMethod sampleUsers(SortOrder order,
                                          HistoryPartitionMethod part,
                                          int size)

Create a crossfold method that splits users into disjoint samples.

Parameters:

order - The ordering for user rating partitions.

part - the partition algorithm for user ratings.

size - The number of users per sample.

Returns:

The crossfold method.

partitionEntities

public static CrossfoldMethod partitionEntities()

Create a crossfold method that partitions ratings into disjoint partitions.

Returns:

The crossfold method.