The SELECT Protocol for Rating and Filtering

Document Type Expired Internet-Draft (individual)
Authors Jacob Palme  , Johan Kaers 
Last updated 2000-06-05
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The SELECT protocol allows Internet users to supply their ratings of Internet documents, and to use ratings provided by other users to filter and select what to read In particular, SELECT supports so-called collaborative filtering. By this is meant that the filtering and selection for a particular user is made based on ratings provided by special groups of raters, such as peer groups, people with similar values, interests and expertise as the person for whom the selecting and filtering is done. The SELECT functionality is downwards compatible with PICS [PICS 1, PICS 2], but a major difference is that while PICS is mainly oriented towards keeping out unsuitable information from children (blackballing), SELECT is mainly oriented towards helping people find the best and most valuable information for them on the Internet (goldballing). A syntactical difference from PICS is that the encodings in SELECT are using the XML encoding format.


Jacob Palme (
Johan Kaers (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)