org.grouplens.lenskit.mf.funksvd

Class FeatureInfo.Builder

java.lang.Object

org.grouplens.lenskit.mf.funksvd.FeatureInfo.Builder

All Implemented Interfaces:

org.apache.commons.lang3.builder.Builder<FeatureInfo>

Enclosing class:

FeatureInfo

public static class FeatureInfo.Builder
extends Object
implements org.apache.commons.lang3.builder.Builder<FeatureInfo>

Helper class to build feature info.

Constructor Summary

Constructors

Constructor and Description
Builder(int f) Construct a new builder.

Method Summary

Modifier and Type	Method and Description
FeatureInfo.Builder	addTrainingRound(double err) Add the error for a training round.
FeatureInfo	build()
int	getFeature() Get the feature's number.
double	getItemAverage()
double	getSingularValue()
double	getUserAverage()
FeatureInfo.Builder	setItemAverage(double itemAverage)
FeatureInfo.Builder	setSingularValue(double singularValue) Set the singular value for this feature.
FeatureInfo.Builder	setUserAverage(double userAverage)

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder(int f)

Construct a new builder.

Parameters:

f - The feature number.

Method Detail

getFeature

public int getFeature()

Get the feature's number.

Returns:

The feature's number.

build

public FeatureInfo build()

Specified by:

build in interface org.apache.commons.lang3.builder.Builder<FeatureInfo>

getUserAverage

public double getUserAverage()

setUserAverage

public FeatureInfo.Builder setUserAverage(double userAverage)

getItemAverage

public double getItemAverage()

setItemAverage

public FeatureInfo.Builder setItemAverage(double itemAverage)

getSingularValue

public double getSingularValue()

setSingularValue

public FeatureInfo.Builder setSingularValue(double singularValue)

Set the singular value for this feature.

Parameters:

singularValue - The feature's singular value.

Returns:

The builder (for chaining).

addTrainingRound

public FeatureInfo.Builder addTrainingRound(double err)

Add the error for a training round.

Parameters:

err - The error for the training round.

Returns:

The builder (for chaining).