Recomendation system

Recommendation systems retrieve information on the basis of users' tastes. This process relies on taste vectors and has become popular in movie recommendation systems and for telephone sales in which a caller who might buy bath towels will cause a computer to prompt the sales representitive to ask "Would you like a set of shower curtain rings?" Such systems can predict user wants with surprising accuracy and increase sales by as much as 25%.

In movie review applications the user assay of films and reviews are used to compile numerous other users profiles weighted by degree of similarity into an expanded taste a profile. Those films which come up consistantly prove to be reliable recommendations because the elements of the movies and matching aspects of human taste tend to apply across individuals.

The utility of such of systems remains poorly explored but is being tested by google.com Collective intelligence, Consensus, Personalized marketing