org.lenskit.mf.funksvd

Class FunkSVDModel

java.lang.Object

org.lenskit.mf.svd.MFModel

org.lenskit.mf.funksvd.FunkSVDModel

All Implemented Interfaces:

Serializable

@DefaultProvider(value=FunkSVDModelProvider.class)
 @Shareable
public final class FunkSVDModel
extends MFModel

Model for FunkSVD recommendation. This extends the SVD model with clamping functions and information about the training of the features.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.lenskit.mf.svd.MFModel

featureCount, itemCount, itemIndex, itemMatrix, userCount, userIndex, userMatrix

Constructor Summary

Constructors

Constructor and Description
FunkSVDModel(org.apache.commons.math3.linear.RealMatrix umat, org.apache.commons.math3.linear.RealMatrix imat, org.lenskit.util.keys.KeyIndex uidx, org.lenskit.util.keys.KeyIndex iidx, List<FeatureInfo> features)

Method Summary

Modifier and Type	Method and Description
org.apache.commons.math3.linear.RealVector	getAverageUserVector()
List<FeatureInfo>	getFeatureInfo() Get the metadata about all features.
FeatureInfo	getFeatureInfo(int f) Get the FeatureInfo for a particular feature.

Methods inherited from class org.lenskit.mf.svd.MFModel

getFeatureCount, getItemCount, getItemFeature, getItemIndex, getItemMatrix, getItemVector, getUserCount, getUserFeature, getUserIndex, getUserMatrix, getUserVector, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FunkSVDModel

public FunkSVDModel(org.apache.commons.math3.linear.RealMatrix umat,
                    org.apache.commons.math3.linear.RealMatrix imat,
                    org.lenskit.util.keys.KeyIndex uidx,
                    org.lenskit.util.keys.KeyIndex iidx,
                    List<FeatureInfo> features)

Method Detail

getFeatureInfo

public FeatureInfo getFeatureInfo(int f)

Get the FeatureInfo for a particular feature.

Parameters:

f - The feature number.

Returns:

The feature’s summary information.

getFeatureInfo

public List<FeatureInfo> getFeatureInfo()

Get the metadata about all features.

Returns:

The feature metadata.

getAverageUserVector

public org.apache.commons.math3.linear.RealVector getAverageUserVector()