A B C D E F G H I M O P R S T U

A

addTrainingRound(double) - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

Add the error for a training round.

apply(double, RealVector, RealVector) - Method in interface org.lenskit.mf.svd.BiasedMFKernel

Apply the kernel function.

apply(double, RealVector, RealVector) - Method in class org.lenskit.mf.svd.DomainClampingKernel

apply(double, RealVector, RealVector) - Method in class org.lenskit.mf.svd.DotProductKernel

B

BiasedMFItemScorer - Class in org.lenskit.mf.svd

Item scorer using biased matrix factorization.

BiasedMFItemScorer(MFModel, BiasedMFKernel, ItemScorer) - Constructor for class org.lenskit.mf.svd.BiasedMFItemScorer

Create a new biased MF item scorer.

BiasedMFKernel - Interface in org.lenskit.mf.svd

A kernel for biased matrix factorization.

build() - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

Builder(int) - Constructor for class org.lenskit.mf.funksvd.FeatureInfo.Builder

Construct a new builder.

C

createUpdater() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdateRule

D

doFeatureIteration(TrainingEstimator, List<RatingMatrixEntry>, RealVector, RealVector, double) - Method in class org.lenskit.mf.funksvd.FunkSVDModelProvider

Do a single feature iteration.

DomainClampingKernel - Class in org.lenskit.mf.svd

Kernel that clamps each feature’s contribution to the preference domain.

DomainClampingKernel(PreferenceDomain) - Constructor for class org.lenskit.mf.svd.DomainClampingKernel

DotProductKernel - Class in org.lenskit.mf.svd

Kernel function that uses the dot product of the user and item vectors.

DotProductKernel() - Constructor for class org.lenskit.mf.svd.DotProductKernel

E

equals(Object) - Method in class org.lenskit.mf.svd.DomainClampingKernel

equals(Object) - Method in class org.lenskit.mf.svd.DotProductKernel

F

FeatureCount - Annotation Type in org.lenskit.mf.funksvd

The number of latent features to use in an SVD-based recommender.

featureCount - Variable in class org.lenskit.mf.funksvd.FunkSVDModelProvider

featureCount - Variable in class org.lenskit.mf.svd.MFModel

FeatureInfo - Class in org.lenskit.mf.funksvd

Information about a feature.

FeatureInfo.Builder - Class in org.lenskit.mf.funksvd

Helper class to build feature info.

FunkSVDItemScorer - Class in org.lenskit.mf.funksvd

Do recommendations and predictions based on SVD matrix factorization.

FunkSVDItemScorer(FunkSVDModel, ItemScorer, PreferenceDomain) - Constructor for class org.lenskit.mf.funksvd.FunkSVDItemScorer

Construct the item scorer.

FunkSVDModel - Class in org.lenskit.mf.funksvd

Model for FunkSVD recommendation.

FunkSVDModel(RealMatrix, RealMatrix, KeyIndex, KeyIndex, List<FeatureInfo>) - Constructor for class org.lenskit.mf.funksvd.FunkSVDModel

FunkSVDModelProvider - Class in org.lenskit.mf.funksvd

SVD recommender builder using gradient descent (Funk SVD).

FunkSVDModelProvider(RatingMatrix, FunkSVDUpdateRule, int, double) - Constructor for class org.lenskit.mf.funksvd.FunkSVDModelProvider

FunkSVDUpdater - Class in org.lenskit.mf.funksvd

Encapsulation of the FunkSVD update process.

FunkSVDUpdateRule - Class in org.lenskit.mf.funksvd

Configuration for computing FunkSVD updates.

FunkSVDUpdateRule(double, double, ItemScorer, PreferenceDomain, StoppingCondition) - Constructor for class org.lenskit.mf.funksvd.FunkSVDUpdateRule

Construct a new FunkSVD configuration.

G

get() - Method in class org.lenskit.mf.funksvd.FunkSVDModelProvider

get(RatingMatrixEntry) - Method in class org.lenskit.mf.funksvd.TrainingEstimator

Get the estimate for a getEntry.

getAverageUserVector() - Method in class org.lenskit.mf.funksvd.FunkSVDModel

getDomain() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdateRule

getError() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdater

Get the error from the prepared update.

getFeature() - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

Get the feature’s number.

getFeature() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the feature number.

getFeatureCount() - Method in class org.lenskit.mf.svd.MFModel

Get the model’s feature count.

getFeatureInfo(int) - Method in class org.lenskit.mf.funksvd.FunkSVDModel

Get the FeatureInfo for a particular feature.

getFeatureInfo() - Method in class org.lenskit.mf.funksvd.FunkSVDModel

Get the metadata about all features.

getItemAverage() - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

getItemAverage() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the item average value of this feature.

getItemCount() - Method in class org.lenskit.mf.svd.MFModel

The number of items.

getItemFeature(long, int) - Method in class org.lenskit.mf.svd.MFModel

Get a particular feature value for an item.

getItemFeatureUpdate() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdater

Get the update for the item-feature value.

getItemIndex() - Method in class org.lenskit.mf.svd.MFModel

The item index mapping.

getItemMatrix() - Method in class org.lenskit.mf.svd.MFModel

Get the item matrix.

getItemVector(long) - Method in class org.lenskit.mf.svd.MFModel

getIterCount() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the iteration count for the feature.

getLastDeltaRMSE() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the last delta RMSE of the feature.

getLastRMSE() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the last training RMSE of the feature.

getLearningRate() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdateRule

getModel() - Method in class org.lenskit.mf.funksvd.FunkSVDItemScorer

getModel() - Method in class org.lenskit.mf.svd.BiasedMFItemScorer

getRMSE() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdater

Get the RMSE of all updates done since the last reset.

getSingularValue() - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

getSingularValue() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the singular value of this feature.

getStoppingCondition() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdateRule

getTrainingErrors() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the training error for each iteration.

getTrainingLoopController() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdateRule

getTrainingRegularization() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdateRule

getUpdateCount() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdater

Get the number of updates this updater has prepared since the last reset.

getUserAverage() - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

getUserAverage() - Method in class org.lenskit.mf.funksvd.FeatureInfo

Get the user average value of this feature.

getUserCount() - Method in class org.lenskit.mf.svd.MFModel

The number of users.

getUserFeature(long, int) - Method in class org.lenskit.mf.svd.MFModel

Get a particular feature value for an user.

getUserFeatureUpdate() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdater

Get the update for the user-feature value.

getUserIndex() - Method in class org.lenskit.mf.svd.MFModel

The user index mapping.

getUserMatrix() - Method in class org.lenskit.mf.svd.MFModel

Get the user matrix.

getUserPreferenceVector(long) - Method in class org.lenskit.mf.svd.BiasedMFItemScorer

Get a user’s preference vector.

getUserVector(long) - Method in class org.lenskit.mf.svd.MFModel

H

hashCode() - Method in class org.lenskit.mf.svd.DomainClampingKernel

hashCode() - Method in class org.lenskit.mf.svd.DotProductKernel

I

InitialFeatureValue - Annotation Type in org.lenskit.mf.funksvd

The initial value for each feature.

initialValue - Variable in class org.lenskit.mf.funksvd.FunkSVDModelProvider

itemCount - Variable in class org.lenskit.mf.svd.MFModel

itemIndex - Variable in class org.lenskit.mf.svd.MFModel

itemMatrix - Variable in class org.lenskit.mf.svd.MFModel

M

makeEstimator(RatingMatrix) - Method in class org.lenskit.mf.funksvd.FunkSVDUpdateRule

Create an estimator to use while training the recommender.

MFModel - Class in org.lenskit.mf.svd

Common model for matrix factorization (SVD) recommendation.

MFModel(RealMatrix, RealMatrix, KeyIndex, KeyIndex) - Constructor for class org.lenskit.mf.svd.MFModel

Construct a matrix factorization model.

O

org.lenskit.mf.funksvd - package org.lenskit.mf.funksvd

org.lenskit.mf.svd - package org.lenskit.mf.svd

P

prepare(int, double, double, double, double, double) - Method in class org.lenskit.mf.funksvd.FunkSVDUpdater

Prepare the updater for updating the feature values for a particular user/item ID.

R

resetStatistics() - Method in class org.lenskit.mf.funksvd.FunkSVDUpdater

Reset the statistics and counters tracked by this updater.

rule - Variable in class org.lenskit.mf.funksvd.FunkSVDModelProvider

RuntimeUpdate - Annotation Type in org.lenskit.mf.funksvd

Qualifier for the update rule used at runtime.

S

scoreWithDetails(long, Collection<Long>) - Method in class org.lenskit.mf.svd.BiasedMFItemScorer

setItemAverage(double) - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

setSingularValue(double) - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

Set the singular value for this feature.

setUserAverage(double) - Method in class org.lenskit.mf.funksvd.FeatureInfo.Builder

snapshot - Variable in class org.lenskit.mf.funksvd.FunkSVDModelProvider

summarizeFeature(RealVector, RealVector, FeatureInfo.Builder) - Method in class org.lenskit.mf.funksvd.FunkSVDModelProvider

Add a feature’s summary to the feature info builder.

T

toString() - Method in class org.lenskit.mf.svd.DomainClampingKernel

toString() - Method in class org.lenskit.mf.svd.DotProductKernel

toString() - Method in class org.lenskit.mf.svd.MFModel

trainFeature(int, TrainingEstimator, RealVector, RealVector, FeatureInfo.Builder) - Method in class org.lenskit.mf.funksvd.FunkSVDModelProvider

Train a feature using a collection of ratings.

TrainingEstimator - Class in org.lenskit.mf.funksvd

Rating estimates used while training the predictor.

U

update(RealVector, RealVector) - Method in class org.lenskit.mf.funksvd.TrainingEstimator

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

userCount - Variable in class org.lenskit.mf.svd.MFModel

userIndex - Variable in class org.lenskit.mf.svd.MFModel

userMatrix - Variable in class org.lenskit.mf.svd.MFModel

A B C D E F G H I M O P R S T U