C# 클래스 MyMediaLite.RatingPrediction.UserKNN

Weighted user-based kNN

상속: KNN, IUserSimilarityProvider, IFoldInRatingPredictor

보호된 프로퍼티들

프로퍼티	타입	설명
data_user	MyMediaLite.DataType.SparseBooleanMatrix

공개 메소드들

메소드	설명
AddRating ( int user_id, int item_id, double rating ) : void
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.
RemoveRating ( int user_id, int item_id ) : void
UpdateRating ( int user_id, int item_id, double rating ) : void
UserKNN ( ) : System

보호된 메소드들

메소드	설명
AddUser ( int user_id ) : void

메소드 상세

AddRating() 공개 메소드

public AddRating ( int user_id, int item_id, double rating ) : void
user_id	int
item_id	int
rating	double
리턴	void

AddUser() 보호된 메소드

protected AddUser ( int user_id ) : void
user_id	int
리턴	void

Predict() 공개 메소드

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
리턴	double

RemoveRating() 공개 메소드

public RemoveRating ( int user_id, int item_id ) : void
user_id	int
item_id	int
리턴	void

UpdateRating() 공개 메소드

public UpdateRating ( int user_id, int item_id, double rating ) : void
user_id	int
item_id	int
rating	double
리턴	void

UserKNN() 공개 메소드

public UserKNN ( ) : System
리턴	System

프로퍼티 상세

data_user 보호되어 있는 프로퍼티

boolean matrix indicating which user rated which item

protected SparseBooleanMatrix,MyMediaLite.DataType data_user
리턴	MyMediaLite.DataType.SparseBooleanMatrix