Taxonomy discovery for personalized recommendation
Yuchen Zhang, Amr AbdelFatah Ahmed, Vanja Josifovski, Alexander Johannes Smola · 2014
Personalized recommender systems based on latent factor models are widely used to increase sales in e-commerce. Such systems use the past behavior of users to recommend new items that are likely to be of interest to them. However, latent factor model suffer from sparse user-item interaction in online shopping data: for a large portion of items that do not have sufficient purchase records, their latent factors cannot be estimated accurately.