An apparatus, method, and computer program product for information filtering in a computer system receiving a data stream from a computer network, the data stream having raw informons embedded therein, at least one of the raw informons being of interest to a user, the user being a member client of a...http://www.google.de/patents/US5867799?utm_source=gb-gplus-sharePatent US5867799 - Information system and method for filtering a massive flow of information entities to meet user information classification needs