Choices in the Implementation of Rating

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Collaborative filtering systems are software systems to help Internet users find the most valuable and interesting information, aided by other people's ratings. Some collaborative filtering systems will even tailor the filtering to your particular needs, interests, competence and values, by using rating values produced by other people with similar views as yours. This paper gives a short overview of existing such tools with links to further information, and then discusses some issues in their design and presents an architecture for a rating and filtering system. This architecture is defined such that modules implemented by different people at different places can interwork.

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By Jacob Palme, e-mail:, at the research group for CMC (Computer Mediated Communication) in the Department of Computer and Systems Sciences at Stockholm University and KTH.

First version January 1997, revised version July 1997.

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