C# Class MyMediaLite.AttrToFactor.BPRMF_UserMapping

User attribute to latent factor mapping for BPR-MF, optimized for RMSE on the latent factors

Inheritance: BPRMF_Mapping, IUserAttributeAwareRecommender

Datei anzeigen Open project: zenogantner/MML-KDD

Protected Properties

Property	Type	Description
user_attributes	MyMediaLite.DataType.SparseBooleanMatrix

Public Methods

Method	Description
IterateMapping ( ) : void
LearnAttributeToFactorMapping ( ) : void
Predict ( int user_id, int item_id ) : double
ToString ( ) : string

Protected Methods

Method	Description
ComputeMappingFit ( ) : double[]
MapUserToLatentFactorSpace ( ICollection user_attributes ) : double[]	map from user attributes to latent factor space
SampleUserWithAttributes ( ) : int	Samples an user for the mapping training. Only users that are associated with at least one item, and that actually have attributes, are taken into account.

Method Details

ComputeMappingFit() protected method

protected ComputeMappingFit ( ) : double[]
return	double[]

IterateMapping() public method

public IterateMapping ( ) : void
return	void

LearnAttributeToFactorMapping() public method

public LearnAttributeToFactorMapping ( ) : void
return	void

MapUserToLatentFactorSpace() protected method

map from user attributes to latent factor space

protected MapUserToLatentFactorSpace ( ICollection user_attributes ) : double[]
user_attributes	ICollection
return	double[]

Predict() public method

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

SampleUserWithAttributes() protected method

Samples an user for the mapping training. Only users that are associated with at least one item, and that actually have attributes, are taken into account.

protected SampleUserWithAttributes ( ) : int
return	int

ToString() public method

public ToString ( ) : string
return	string

Property Details

user_attributes protected_oe property

The matrix storing the user attributes

protected SparseBooleanMatrix,MyMediaLite.DataType user_attributes
return	MyMediaLite.DataType.SparseBooleanMatrix