com.cloudera.oryx.app.speed.als

Class ALSSpeedModel

java.lang.Object

com.cloudera.oryx.app.speed.als.ALSSpeedModel

All Implemented Interfaces:

SpeedModel

public final class ALSSpeedModel
extends Object
implements SpeedModel

Contains all data structures needed to create near-real-time updates for an ALS-based recommender.

Method Summary

Modifier and Type	Method and Description
double	getEpsilon()
int	getFeatures()
float	getFractionLoaded()
float[]	getItemVector(String item)
float[]	getUserVector(String user)
Solver	getXTXSolver()
Solver	getYTYSolver()
boolean	isImplicit()
boolean	isLogStrength()
void	retainRecentAndItemIDs(Collection<String> items)
void	retainRecentAndUserIDs(Collection<String> users)
void	setItemVector(String item, float[] vector)
void	setUserVector(String user, float[] vector)
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getFeatures

public int getFeatures()

isImplicit

public boolean isImplicit()

isLogStrength

public boolean isLogStrength()

getEpsilon

public double getEpsilon()

getUserVector

public float[] getUserVector(String user)

getItemVector

public float[] getItemVector(String item)

setUserVector

public void setUserVector(String user,
                          float[] vector)

setItemVector

public void setItemVector(String item,
                          float[] vector)

retainRecentAndUserIDs

public void retainRecentAndUserIDs(Collection<String> users)

retainRecentAndItemIDs

public void retainRecentAndItemIDs(Collection<String> items)

getXTXSolver

public Solver getXTXSolver()

getYTYSolver

public Solver getYTYSolver()

getFractionLoaded

public float getFractionLoaded()

Specified by:

getFractionLoaded in interface SpeedModel

Returns:

fraction of IDs that were expected to be in the model whose value has been loaded from an update

toString

public String toString()

Overrides:

toString in class Object