org.grouplens.lenskit.mf.funksvd

Class FeatureInfo

java.lang.Object

org.grouplens.lenskit.mf.funksvd.FeatureInfo

All Implemented Interfaces:

Serializable

public class FeatureInfo
extends Object
implements Serializable

Information about a feature.

Since:

1.1

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FeatureInfo.Builder Helper class to build feature info.

Method Summary

Modifier and Type	Method and Description
int	getFeature() Get the feature number.
double	getItemAverage() Get the item average value of this feature.
int	getIterCount() Get the iteration count for the feature.
double	getLastDeltaRMSE() Get the last delta RMSE of the feature.
double	getLastRMSE() Get the last training RMSE of the feature.
double	getSingularValue() Get the singular value of this feature.
DoubleList	getTrainingErrors() Get the training error for each iteration.
double	getUserAverage() Get the user average value of this feature.

Methods inherited from class java.lang.Object

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

Method Detail

getFeature

public int getFeature()

Get the feature number.

Returns:

The feature number.

getIterCount

public int getIterCount()

Get the iteration count for the feature.

Returns:

The number of iterations used to train the feature.

getTrainingErrors

public DoubleList getTrainingErrors()

Get the training error for each iteration.

Returns:

The training error for each iteration.

getLastRMSE

public double getLastRMSE()

Get the last training RMSE of the feature.

Returns:

The RMSE of the last iteration training this feature.

getLastDeltaRMSE

public double getLastDeltaRMSE()

Get the last delta RMSE of the feature.

Returns:

The RMSE improvement in the last training round of this feature.

getUserAverage

public double getUserAverage()

Get the user average value of this feature.

Returns:

The user average value.

getItemAverage

public double getItemAverage()

Get the item average value of this feature.

Returns:

The item average value.

getSingularValue

public double getSingularValue()

Get the singular value of this feature.

Returns:

The singular value (weight) of the feature.