oracle.pgx.api

Class MatrixFactorizationModel<ID>

java.lang.Object

oracle.pgx.api.MatrixFactorizationModel<ID>

Type Parameters:

ID - The vertex ID type

public class MatrixFactorizationModel<ID>
extends java.lang.Object

Object that holds the state for repeatedly returning estimated ratings after a call to Analyst.matrixFactorizationGradientDescentAsync(BipartiteGraph, EdgeProperty, double, double, double, int, int)

Author:

Tim Boudreau

Method Summary

Modifier and Type	Method and Description
VertexProperty<ID,java.lang.Double>	getEstimatedRatings(PgxVertex<ID> estimateRatingsFor) Blocking version of getEstimatedRatingsAsync(PgxVertex)
PgxFuture<VertexProperty<ID,java.lang.Double>>	getEstimatedRatingsAsync(PgxVertex<ID> estimateRatingsFor) Computes estimated ratings for a specific vertex.
VertexProperty<ID,PgxVect<java.lang.Double>>	getFeatures() Gets the features of this model.
double	getRootMeanSquareError() Gets the computed root mean square error value.

Methods inherited from class java.lang.Object

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

Method Detail

getEstimatedRatings

public VertexProperty<ID,java.lang.Double> getEstimatedRatings(PgxVertex<ID> estimateRatingsFor)
                                                        throws java.lang.InterruptedException,
                                                               java.util.concurrent.ExecutionException

Blocking version of getEstimatedRatingsAsync(PgxVertex)

Parameters:

estimateRatingsFor - The vertex to get estimated ratings for

Returns:

the VertexProperty containing the estimated ratings

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

getEstimatedRatingsAsync

public PgxFuture<VertexProperty<ID,java.lang.Double>> getEstimatedRatingsAsync(PgxVertex<ID> estimateRatingsFor)

Computes estimated ratings for a specific vertex.

Parameters:

estimateRatingsFor - The vertex to get estimated ratings for

Returns:

A future

getFeatures

public VertexProperty<ID,PgxVect<java.lang.Double>> getFeatures()

Gets the features of this model.

Returns:

the feature vertex property

getRootMeanSquareError

public double getRootMeanSquareError()

Gets the computed root mean square error value.

Returns:

the computed root mean square error value