On Recommender Systems

Recommender systems [Resnick and Varian, 1997] have gained wide-spread acceptance and attracted increased public interest during the last decade, levelling the ground for new sales opportunities in e-commerce [Schafer et al, 1999; Sarwar et al, 2000a]. For instance, online retailers like Amazon.com (http://www.amazon.com) successfully employ an extensive range of different types of recommender systems.