He teaches and conducts research in the information science area, specializing in information retrieval and user modeling. He has joint faculty affiliations in the information science program and biomedical research and imaging center (a Medical School entity) at UNC. Recently, his research focused on personalized health information delivery while preserving privacy (a National Science Foundation funded project). He is also the PI on an ongoing educational grant from the Institute of Museum and Library Services focusing on training next generation digital librarians.