C# Class MyMediaLite.RatingPrediction.SimpleMatrixFactorization

Simple matrix factorization class

Minimalistic MF implementation, without working LoadModel()/SaveModel(). This recommender does NOT support incremental updates.

Inheritance: RatingPredictor, IIterativeModel

Public Methods

Method	Description
ComputeFit ( ) : double
Iterate ( ) : void	Iterate once over rating data (stochastic gradient descent)
LoadModel ( string file ) : void
Predict ( int user_id, int item_id ) : double	Predict the rating of a given user for a given item
SaveModel ( string file ) : void
SimpleMatrixFactorization ( ) : System	Default constructor
ToString ( ) : string
Train ( ) : void

public ComputeFit ( ) : double
return	double

Iterate once over rating data (stochastic gradient descent)

public Iterate ( ) : void
return	void

public LoadModel ( string file ) : void
file	string
return	void

Predict the rating of a given user for a given item

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

public SaveModel ( string file ) : void
file	string
return	void

Default constructor

public SimpleMatrixFactorization ( ) : System
return	System

public ToString ( ) : string
return	string

public Train ( ) : void
return	void