Patents by Inventor Hasanat Dewan

Hasanat Dewan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Incremental update process and apparatus for an inference system
    Patent number: 5363473
    Abstract: A technique is provided in the present invention for updating a current database without restarting a knowledge-based system (rule-based system, inference system, expert system). The technique allows for the receipt of updates to an earlier database after an inference procedure has started or even after it has ended. The technique calls for the performance of actions necessary to incrementally bring the database to a consistent state by selectively undoing the inferential consequences of not having had the updated fact in the prior inference procedures and redoing the inferential consequences of having the newly received updated fact.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: November 8, 1994
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Salvatore J. Stolfo, Ouri Wolfson, Hasanat Dewan