CSCW '98 Proceedings of the 1998 ACM conference on Computer supported cooperative work
An algorithmic framework for performing collaborative filtering
Proceedings of the 22nd annual international ACM SIGIR conference on Research and development in information retrieval
Looking for "good" recommendations: a comparative evaluation of recommender systems
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part III
ACM Transactions on Interactive Intelligent Systems (TiiS)
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The purpose of this experiment was to determine whether recommendations based on collaborative filtering (CF) are perceived as superior to recommendations based on user population averages. The test vehicle was a movie recommender. 29 subjects were divided into 2 groups, each group using one of these systems. The recommneder systems suggested movies which subjects later viewed. Each subject filled out pre and post-questionnaires about their experience. Subjects using the CF algorithm rated more movies. Subjects placed slightly more confidence in the recommendations of the population averages algorithm. Both algorithms were over-confident compared to subjects ratings. Subjects found both recommender systems to be an effective source of finding entertainment. User responses did not reveal a noticeable difference between the two algorithms.