C# Класс MyMediaLite.RatingPrediction.NewKNN

kNN-based rating predictors (not working yet)

The method is described in section 2.2 of Yehuda Koren Factor in the Neighbors: Scalable and Accurate Collaborative Filtering Transactions on Knowledge Discovery from Data (TKDD), 2009 This recommender does NOT support incremental updates. ItemRecommendation.KNN

Наследование: UserItemBaseline

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Открытые методы

Метод	Описание
LoadModel ( string filename ) : void
NewKNN ( ) : System	Constructor
Predict ( int user_id, int item_id ) : double	Predict the rating of a given user for a given item If the user or the item are not known to the recommender, a suitable average rating is returned. To avoid this behavior for unknown entities, use CanPredict() to check before.
SaveModel ( string filename ) : void
ToString ( ) : string
Train ( ) : void

Приватные методы

Метод	Описание
CreateSimilarityMatrix ( string typename ) : void

Описание методов

LoadModel() публичный Метод

public LoadModel ( string filename ) : void
filename	string
Результат	void

NewKNN() публичный Метод

Constructor

public NewKNN ( ) : System
Результат	System

Predict() публичный Метод

Predict the rating of a given user for a given item

If the user or the item are not known to the recommender, a suitable average rating is returned. To avoid this behavior for unknown entities, use CanPredict() to check before.

public Predict ( int user_id, int item_id ) : double
user_id	int	the user ID
item_id	int	the item ID
Результат	double

SaveModel() публичный Метод

public SaveModel ( string filename ) : void
filename	string
Результат	void

ToString() публичный Метод

public ToString ( ) : string
Результат	string

Train() публичный Метод

public Train ( ) : void
Результат	void