C# Class MyMediaLite.RatingPrediction.UserKNN

Weighted user-based kNN

Inheritance: KNN, IUserSimilarityProvider, IFoldInRatingPredictor

Afficher le fichier Open project: zenogantner/MML-KDD

Protected Properties

Свойство	Type	Description
data_user	MyMediaLite.DataType.SparseBooleanMatrix

Méthodes publiques

Méthode	Description
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

Méthodes protégées

Méthode	Description
AddUser ( int user_id ) : void

Method Details

AddRating() public méthode

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

AddUser() protected méthode

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

Predict() public méthode

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
Résultat	double

RemoveRating() public méthode

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

UpdateRating() public méthode

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

UserKNN() public méthode

public UserKNN ( ) : System
Résultat	System

Property Details

data_user protected_oe property

boolean matrix indicating which user rated which item

protected SparseBooleanMatrix,MyMediaLite.DataType data_user
Résultat	MyMediaLite.DataType.SparseBooleanMatrix