Conceptual recommender system for CiteSeerX. - Ajith Kodakateri Pudhiyaveetil; Susan Gauch; Hiep Phuc Luong; Josh Eno (RecSys, 2009)

Mining Hidden Concepts for Ontology Extension Using Multivariate Probabilistic Modeling. - Nanhong Ye; Ajith Kodakateri Pudhiyaveetil; Susan Gauch (Web Intelligence, 2009)