com.planetj.taste.impl.recommender
Class TopItems

java.lang.Object
  com.planetj.taste.impl.recommender.TopItems

public final class TopItems
extends java.lang.Object

A simple class that refactors the "find top N recommended items" logic that is used in several places in Taste.

Since:

1.1

Author:

Sean Owen, tsmorton

Nested Class Summary

static interface

TopItems.Estimator<T>

Method Summary

static java.util.List<GenericItemCorrelation.ItemItemCorrelation>	getTopItemItemCorrelations(int howMany, java.lang.Iterable<GenericItemCorrelation.ItemItemCorrelation> allCorrelations) Thanks to tsmorton for suggesting this functionality and writing part of the code.
static java.util.List<RecommendedItem>	getTopItems(int howMany, java.lang.Iterable<Item> allItems, Rescorer<Item> rescorer, TopItems.Estimator<Item> estimator)
static java.util.List<User>	getTopUsers(int howMany, java.lang.Iterable<User> allUsers, Rescorer<User> rescorer, TopItems.Estimator<User> estimator)

Methods inherited from class java.lang.Object

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

Method Detail

getTopItems

@NotNull
public static java.util.List<RecommendedItem> getTopItems(int howMany,
                                                                  java.lang.Iterable<Item> allItems,
                                                                  Rescorer<Item> rescorer,
                                                                  TopItems.Estimator<Item> estimator)
                                                   throws TasteException

Throws:

TasteException

getTopUsers

@NotNull
public static java.util.List<User> getTopUsers(int howMany,
                                                       java.lang.Iterable<User> allUsers,
                                                       Rescorer<User> rescorer,
                                                       TopItems.Estimator<User> estimator)
                                        throws TasteException

Throws:

TasteException

getTopItemItemCorrelations

@NotNull
public static java.util.List<GenericItemCorrelation.ItemItemCorrelation> getTopItemItemCorrelations(int howMany,
                                                                                                            java.lang.Iterable<GenericItemCorrelation.ItemItemCorrelation> allCorrelations)

Thanks to tsmorton for suggesting this functionality and writing part of the code.

See Also:

GenericItemCorrelation.GenericItemCorrelation(Iterable, int), GenericItemCorrelation.GenericItemCorrelation(com.planetj.taste.correlation.ItemCorrelation , com.planetj.taste.model.DataModel , int)