PRECIPITATION/DISSOLUTION AND FILTERING OF STORED PROGRAMS AND SEGMENTS BASED ON USER PREFERENCES

摘要

A content maintenance system uses a time-dependent precipitation function for iteratively augmenting or removing content over time, after an initial demonstration of user interest. A plurality of parallel precipitation processes can be launched simultaneously in response to different facets of a user expression of interest. Precipitation is dependent on highlighting or extracting segment descriptors (302) from content of interest to the user. Then segments are filtered, rated, annotated and/or prioritized from that content (303,304). The remaining segments are matched (305) against stored search structures (212). When the segments match, they are precipitated out (306,307) for storage and can generate new search structures.