Sung-Hyon Myaeng Douglas W. Oard Fabrizio Sebastiani Tat-Seng Chua Mun-Kew Leong Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2008, Singapore, July 20-24, 2008 978-1-60558-164-4 SIGIR ACM 2008 db/conf/sigir/sigir2008.html