Coping with Sparsity in a Recommender System.

André Bergholz Coping with Sparsity in a Recommender System. 86-99 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2703&spage=86 2002 conf/kdd/2002web WEBKDD db/conf/kdd/webkdd2002.html#Bergholz02