C# 클래스 MyMediaLite.AttrToFactor.BPRMF_ItemMapping_Optimal

item attribute to latent factor mapping, optimized for BPR loss
Literature: Zeno Gantner, Lucas Drumond, Christoph Freudenthaler, Steffen Rendle, Lars Schmidt-Thieme: Learning Attribute-to-Feature Mappings for Cold-Start Recommendations. ICDM 2011. http://www.ismll.uni-hildesheim.de/pub/pdfs/Gantner_et_al2010Mapping.pdf This recommender does NOT support incremental updates.
상속: BPRMF_ItemMapping
파일 보기 프로젝트 열기: zenogantner/MML-KDD

공개 메소드들

메소드 설명
IterateMapping ( ) : void
LearnAttributeToFactorMapping ( ) : void
ToString ( ) : string

보호된 메소드들

메소드 설명
MapToLatentFactorSpace ( int item_id ) : double[]
UpdateMappingFactors ( int u, int i, int j ) : void

update the mapping factors for a given user and an item pair
__MapToLatentFactorSpace ( int item_id ) : double[]

메소드 상세

IterateMapping() 공개 메소드

public IterateMapping ( ) : void
리턴 void

LearnAttributeToFactorMapping() 공개 메소드

public LearnAttributeToFactorMapping ( ) : void
리턴 void

MapToLatentFactorSpace() 보호된 메소드

protected MapToLatentFactorSpace ( int item_id ) : double[]
item_id int
리턴 double[]

ToString() 공개 메소드

public ToString ( ) : string
리턴 string

UpdateMappingFactors() 보호된 메소드

update the mapping factors for a given user and an item pair
protected UpdateMappingFactors ( int u, int i, int j ) : void
u int the user ID
i int the first item ID
j int the second item ID
리턴 void

__MapToLatentFactorSpace() 보호된 메소드

protected __MapToLatentFactorSpace ( int item_id ) : double[]
item_id int
리턴 double[]