Chumki Basu Haym Hirsh William W. Cohen Craig G. Nevill-Manning Technical Paper Recommendation: A Study in Combining Multiple Information Sources. 231-252 2001 14 J. Artif. Intell. Res. (JAIR) http://www.cs.washington.edu/research/jair/abstracts/basu01a.html db/journals/jair/jair14.html#BasuHCN01