A pyhton implentation of AtF(Expediting Exploration by Attribute-to-Feature Mapping for Cold-Start Recommendations. ACM Rec-Sys 2017).IDE: Spyder Just part implentation of this paper without the DBPR part. Mapping part is just a simple way using matrix for linear mapping. You can also try to map a different way. NN 、 GBDT or whatever you wanna.