org.apache.mahout.cf.taste.example.jester

Class JesterRecommender

java.lang.Object

org.apache.mahout.cf.taste.example.jester.JesterRecommender

All Implemented Interfaces:

Refreshable, Recommender

public final class JesterRecommender
extends Object
implements Recommender

A simple Recommender implemented for the Jester Online Joke Recommender data set demo. See the Jester site.

Constructor Summary

Constructors

Constructor and Description
JesterRecommender(DataModel dataModel)

Method Summary

Methods

Modifier and Type	Method and Description
float	estimatePreference(long userID, long itemID)
DataModel	getDataModel()
List<RecommendedItem>	recommend(long userID, int howMany)
List<RecommendedItem>	recommend(long userID, int howMany, IDRescorer rescorer)
void	refresh(Collection<Refreshable> alreadyRefreshed)
void	removePreference(long userID, long itemID)
void	setPreference(long userID, long itemID, float value)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

JesterRecommender

public JesterRecommender(DataModel dataModel)
                  throws TasteException

Throws:

TasteException

Method Detail

recommend

public List<RecommendedItem> recommend(long userID,
                              int howMany)
                                throws TasteException

Specified by:

recommend in interface Recommender

Throws:

TasteException

recommend

public List<RecommendedItem> recommend(long userID,
                              int howMany,
                              IDRescorer rescorer)
                                throws TasteException

Specified by:

recommend in interface Recommender

Throws:

TasteException

estimatePreference

public float estimatePreference(long userID,
                       long itemID)
                         throws TasteException

Specified by:

estimatePreference in interface Recommender

Throws:

TasteException

setPreference

public void setPreference(long userID,
                 long itemID,
                 float value)
                   throws TasteException

Specified by:

setPreference in interface Recommender

Throws:

TasteException

removePreference

public void removePreference(long userID,
                    long itemID)
                      throws TasteException

Specified by:

removePreference in interface Recommender

Throws:

TasteException

getDataModel

public DataModel getDataModel()

Specified by:

getDataModel in interface Recommender

refresh

public void refresh(Collection<Refreshable> alreadyRefreshed)

Specified by:

refresh in interface Refreshable

toString

public String toString()

Overrides:

toString in class Object