Patents by Inventor Gerald J. Morton

Gerald J. Morton 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).

  • System of document representation retrieval by successive iterated probability sampling
    Patent number: 5488725
    Abstract: An information retrieval system based on probabilities that documents meet information needs. The frequency of occurrence of a representation in a collection of documents is estimated by identifying the frequency of occurrence of the representation in a sample of documents and calculating the difference between the maximum and minimum probable frequencies of occurrence of the representation in the collection. If the difference does not exceed a limit, a midpoint of the maximum and minimum probable frequencies is the estimated frequency of occurrence of the representation.Document distribution probabilities are optimized and probability thresholds are established for the identification of documents. An initial probability threshold is established and is adjusted as the probabilities are scored for documents in samples. The document result list is iteratively adjusted through the samples.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: January 30, 1996
    Assignee: West Publishing Company
    Inventors: Howard R. Turtle, Gerald J. Morton, F. Kinley Larntz