org.lenskit.mf.funksvd

Class TrainingEstimator

java.lang.Object

org.lenskit.mf.funksvd.TrainingEstimator

public final class TrainingEstimator
extends Object

Rating estimates used while training the predictor. An estimator can be constructed using FunkSVDUpdateRule.makeEstimator(RatingMatrix).

Since:

1.1

Method Summary

Modifier and Type	Method and Description
double	get(org.lenskit.data.ratings.RatingMatrixEntry pref) Get the estimate for a getEntry.
void	update(org.apache.commons.math3.linear.RealVector ufvs, org.apache.commons.math3.linear.RealVector ifvs) Update the current estimates with trained values for a new feature.

Methods inherited from class java.lang.Object

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

Method Detail

get

public double get(org.lenskit.data.ratings.RatingMatrixEntry pref)

Get the estimate for a getEntry.

Parameters:

pref - The getEntry.

Returns:

The estimate.

update

public void update(org.apache.commons.math3.linear.RealVector ufvs,
                   org.apache.commons.math3.linear.RealVector ifvs)

Update the current estimates with trained values for a new feature.

Parameters:

ufvs - The user feature values.

ifvs - The item feature values.