Documents Improving Social Recommender Systems, Ofer Arazy, Nanda Kumar, Bracha Shapira

38 IT Pro July/August 2009 P u b l i s h e d b y t h e I E E E C o m p u t e r S o c i e t y 1520-9202/09/$25.00 © 2009 IEEE SoCIAl CompuTINg Improving Social Recommender…