Information retrieval methods and apparatus which involve: 1) the generation of estimates regarding the probability that items included in search results are already known to the user and 2) the use of such knowledge probability estimates to influence the ranking of search results, are described. By...http://www.google.fr/patents/US6006218?utm_source=gb-gplus-shareBrevet US6006218 - Methods and apparatus for retrieving and/or processing retrieved information as a function of a user's estimated knowledge
Methods and apparatus for retrieving and/or processing retrieved information ...
