C# Class MyMediaLite.ItemRecommendation.BPR_SMF_KDD

BPRMF with frequency-adjusted sampling and shared factors

prototype for KDD Cup 2011

Inheritance: BPRMF, IKDDCupRecommender

Exibir arquivo Open project: zenogantner/MML-KDD

Public Methods

Method	Description
BPR_SMF_KDD ( ) : System	Default constructor
Predict ( int user_id, int item_id ) : double
ToString ( ) : string

Protected Methods

Method	Description
InitModel ( ) : void
SampleTriple ( int &u, int &i, int &j ) : void
UpdateFactors ( int u, int i, int j, bool update_u, bool update_i, bool update_j ) : void

Private Methods

Method	Description
UpdateSharedFactors ( int u, int category_i, int category_j, int num_factors, Matrix user_shared_factors, Matrix item_shared_factors, double common_gradient ) : void

Method Details

BPR_SMF_KDD() public method

Default constructor

public BPR_SMF_KDD ( ) : System
return	System

InitModel() protected method

protected InitModel ( ) : void
return	void

Predict() public method

public Predict ( int user_id, int item_id ) : double
user_id	int
item_id	int
return	double

SampleTriple() protected method

protected SampleTriple ( int &u, int &i, int &j ) : void
u	int
i	int
j	int
return	void

ToString() public method

public ToString ( ) : string
return	string

UpdateFactors() protected method

protected UpdateFactors ( int u, int i, int j, bool update_u, bool update_i, bool update_j ) : void
u	int
i	int
j	int
update_u	bool
update_i	bool
update_j	bool
return	void