org.lenskit.eval.crossfold

Class FractionHistoryPartitionMethod

java.lang.Object

org.lenskit.eval.crossfold.FractionHistoryPartitionMethod

All Implemented Interfaces:

HistoryPartitionMethod

public class FractionHistoryPartitionMethod
extends java.lang.Object
implements HistoryPartitionMethod

Partition a list by fraction.

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
int	hashCode()
int	partition(java.util.List<? extends Rating> data) Compute a partition of of the data.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FractionHistoryPartitionMethod

public FractionHistoryPartitionMethod(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(java.util.List<? extends Rating> data)

Description copied from interface: HistoryPartitionMethod

Compute a partition of of the data.

Specified by:

partition in interface HistoryPartitionMethod

Parameters:

data - The data to partition.

Returns:

The index of the start of the second partition, containing the test data.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object