Patents by Inventor Keith E. Mathias

Keith E. Mathias 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).

  • Patent number: 8589404
    Abstract: Systems and methods are provided for retrieving data relevant to a subject of interest. Occurrences of each of a plurality of n-grams within the data record are identified. A multinomial distribution is defined from the respective numbers of occurrence of a subset of the plurality of n-grams. The multinomial distribution is stored in a semantic model as a point on an information manifold. The semantic model is configured to represent an indexed family of probability distributions as points on the information manifold. It is determined if the data record is relevant to the subject of interest according to the position of the point on the information manifold, and the data record is retrieved if the data record is relevant to the subject of interest.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: November 19, 2013
    Assignee: Northrop Grumman Systems Corporation
    Inventors: Kirk Dunkelberger, Eva-Marie Proszkow, Jason S. Byassee, Keith E. Mathias, Earl C. Pilloud, Daniel A. Pier
  • Patent number: 8578439
    Abstract: System actions such as presentation of information to a user via a remote control device are carried out in accordance with user preferences based on, e.g., observed user behavior over time. The preferences may be learned by observation of user actions and corresponding system state information, and the preferences may be verified by the user. Particular actions may then be repeated under the control of the system, when appropriate conditions are met. Repetition may be automatic, semi-automatic or user initiated. In an illustrative embodiment, information is presented to a user via a remote control device based at least in part on the determined preference. The information presented to the user via the remote control device may include, e.g.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: November 5, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Keith E. Mathias, Karen I. Trovato, J. David Schaffer
  • Patent number: 6553357
    Abstract: The noise associated with conventional techniques for evolutionary improvement of neural network architectures is reduced so that of an optimum architecture can be determined more efficiently and more effectively. Parameters that affect the initialization of a neural network architecture are included within the encoding that is used by an evolutionary algorithm to optimize the neural network architecture. The example initialization parameters include an encoding that determines the initial nodal weights used in each architecture at the commencement of the training cycle. By including the initialization parameters within the encoding used by the evolutionary algorithm, the initialization parameters that have a positive effect on the performance of the resultant evolved network architecture are propagated and potentially improved from generation to generation. Conversely, initialization parameters that, for example, cause the resultant evolved network to be poorly trained, will not be propagated.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: April 22, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Keith E. Mathias, Larry J. Eshelman, J. David Schaffer
  • Patent number: 6492905
    Abstract: A security system incorporating a reasoning system and security rules and processes. Transponders may be triggered and sensed from a distance to identify both items and individuals. These sensed identifiers are processed by the reasoning system to determine whether each identified item is authorized to be removed from or brought into a secured location by the identified individual. The system modifies and optimizes its rules and processes based on assessments of security events. The security system enforces these security rules and receives feedback from authorized security personnel. A learning system is configured to modify existing rules or create new rules in conformance with the feedback from the authorized security personnel.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: December 10, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Keith E. Mathias, J. David Schaffer
  • Publication number: 20020174079
    Abstract: sets or evaluation on sets among the evaluated neural networks may cause potentially worthwhile architectures to be rejected prematurely, obviating the advantages realizable by a directed trial and error process. It is an object of this invention to provide a method for improving neural network architectures via an evolutionary algorithm that reduces the adverse effects of the noise that is introduced by the network initialization process. It is a further object of this invention to reduce the noise that is introduced by the network initialization process. It is a further object of this invention to provide an optimized network initialization process. It is a further object of this invention to reduce the noise that is introduced by the use of randomly selected training or evaluation input sets.
    Type: Application
    Filed: September 1, 1999
    Publication date: November 21, 2002
    Inventors: KEITH E. MATHIAS, LARRY J. ESHELMAN, J. DAVID SCHAFFER
  • Patent number: 6480627
    Abstract: An evolutionary algorithm evolves alternative architectures and parameters for an image classification system. In a preferred embodiment, a learning system is employed, and during the training period of the learning system, the architecture of the learning system is evolved so as to create a learning system that is well suited to the particular classification problem set. In like manner, other parameters of the image classification system are evolved by the evolutionary algorithm, including those that effect image characterization, learning, and classification. An initial set of parameters and architectures are used to create a set of trial classification systems. A number of pre-classified evaluation images are then applied to each system, and each system's resultant classifications for each test case is compared to the proper classification of each test case. Subsequent trial classification systems are evolved based upon the parameters and architecture of the better performing classification systems.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: November 12, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Keith E. Mathias, Murali Mani, J. David Schaffer
  • Publication number: 20010052851
    Abstract: A security system incorporates a reasoning system and security rules and processes that are designed to be as unobtrusive as the situation permits. Two independent aspects of the system facilitate the enforcement of rules and processes in an unobtrusive manner. First, transponders that can be triggered and sensed from a distance are preferably used to identify both items and individuals. These remotely sensed identifiers are processed by the reasoning system to determine whether each identified item is authorized, or likely to be authorized, to be removed from, or brought into, a secured location by the identified individual. Second, the system continually modifies and optimizes its rules and processes based on assessments of security events. An initial set of rules is created for the security system that, generally, prohibit the removal of secured items from the secured location, except that certain individuals are authorized to remove specified items from the secured location.
    Type: Application
    Filed: August 20, 2001
    Publication date: December 20, 2001
    Applicant: Philips electronics North America Corp.
    Inventors: Keith E. Mathias, J. David Schaffer
  • Patent number: 6300872
    Abstract: A security system incorporates a reasoning system and security rules and processes that are designed to be as unobtrusive as the situation permits. Two independent aspects of the system facilitate the enforcement of rules and processes in an unobtrusive manner. First, transponders that can be triggered and sensed from a distance are preferably used to identify both items and individuals. These remotely sensed identifiers are processed by the reasoning system to determine whether each identified item is authorized, or likely to be authorized, to be removed from, or brought into, a secured location by the identified individual. Second, the system continually modifies and optimizes its rules and processes based on assessments of security events. An initial set of rules is created for the security system that, generally, prohibit the removal of secured items from the secured location, except that certain individuals are authorized to remove specified items from the secured location.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: October 9, 2001
    Assignee: Philips Electronics North America Corp.
    Inventors: Keith E. Mathias, J. David Schaffer
  • Patent number: 6260031
    Abstract: A code compaction based on macro substitutions is presented wherein the choice of possible macro substitutions is guided by an evolutionary algorithm process. In a preferred embodiment, a random population of sets of macro substitutions are generated and a compaction effectiveness is evaluated for each set. This random population is partitioned into pairs of “parents”, and each pair of parents produce a pair of “offspring”. The effectiveness of the compaction provided by each of the offspring is evaluated, and a “survival of the fittest” algorithm is applied to identify the individuals that have the best compaction effectiveness. These preferred individuals are partitioned into pairs of parents who produce pairs of offspring, and the most compaction-effective individuals are selected to be parents for the next generation. This process continues until subsequent generations show insignificant improvement, and the best individual is selected as the solution.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: July 10, 2001
    Assignee: Philips Electronics North America Corp.
    Inventors: J. David Schaffer, Keith E. Mathias, Larry J. Eshelman
  • Patent number: 6196917
    Abstract: A user interface is provided that allows for the control of the movement of multiple objects by the identification of a target location associated with each of the multiple objects. The identification of the target location is via a coordinate pointer associated with an input device, and the association of the target location to a particular object is via the closure of a switch on an input device that is associated with the particular object. After identifying an associated target location, the object is moved toward the target location without further input from the user. In a preferred embodiment, the movement of the object toward the target location is dependent upon rules of motion and rules of engagement with other objects or obstacles, thereby facilitating a realistic rendering of the object's path toward the target. The rules of motion and engagement may be specific to each type of object being moved, and also subject to the interactions of multiple objects and obstacles.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: March 6, 2001
    Assignee: Philips Electronics North America Corp.
    Inventors: Keith E. Mathias, J. David Schaffer