Industry Report 76 JANUARY • FEBRUARY 2003 Published by the IEEE Computer Society 1089-7801/03/$17.00©2003 IEEE IEEE INTERNET COMPUTING Amazon.com Recommendations Item-to-Item Collaborative Filtering R ecommendation algorithms are best known for their use on e-commerce Web sites,1 where they use input about a cus- tomer’s interests to generate a list of recommend- ed items. Many applications use o