Patents by Inventor Costin Barbu

Costin Barbu 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: 11067659
    Abstract: A system and method for rank estimation of electromagnetic emitters is provided. One exemplary feature of the system and method includes the use of a Fixed Sigma Gaussian Mixture Model (FSGMM) to determine a rank estimation of electromagnetic emitters. Another exemplary feature of the system and method includes the use of a Gaussian Mixture Model (GMM) clustering approach in conjunction with an Akaike Criterion Information (AIC) to determine a number of clusters and associated statistics of emitters.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 20, 2021
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Court E. Rossman, Costin Barbu, Thomas R. Vaccaro
  • Publication number: 20180172794
    Abstract: A system and method for rank estimation of electromagnetic emitters is provided. One exemplary feature of the system and method includes the use of a Fixed Sigma Gaussian Mixture Model (FSGMM) to determine a rank estimation of electromagnetic emitters. Another exemplary feature of the system and method includes the use of a Gaussian Mixture Model (GMM) clustering approach in conjunction with an Akaike Criterion Information (AIC) to determine a number of clusters and associated statistics of emitters.
    Type: Application
    Filed: December 15, 2016
    Publication date: June 21, 2018
    Inventors: Court E. Rossman, Costin Barbu, Thomas R. Vaccaro
  • Patent number: 7668790
    Abstract: A boosting—based method and system for fusing a set of classifiers that performs classification using weak learners trained on different views of the training data. The final ensemble contains learners that are trained on examples sampled with a shared sampling distribution. The combination weights for the final weighting rule are obtained at each iteration based on the lowest training error among the views. Weights are updated in each iteration based on the lowest training error among all views at that iteration to form the shared sampling distribution used at the next iteration. In each iteration, a weak learner is selected from the pool of weak learners trained on disjoint views based on the lowest training error among all views, resulting in a lower training and generalization error bound of the final hypothesis.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: February 23, 2010
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Costin Barbu, Maura C Lohrenz
  • Publication number: 20080027887
    Abstract: A boosting—based method and system for fusing a set of classifiers that performs classification using weak learners trained on different views of the training data. The final ensemble contains learners that are trained on examples sampled with a shared sampling distribution. The combination weights for the final weighting rule are obtained at each iteration based on the lowest training error among the views. Weights are updated in each iteration based on the lowest training error among all views at that iteration to form the shared sampling distribution used at the next iteration. In each iteration, a weak learner is selected from the pool of weak learners trained on disjoint views based on the lowest training error among all views, resulting in a lower training and generalization error bound of the final hypothesis.
    Type: Application
    Filed: September 25, 2006
    Publication date: January 31, 2008
    Applicant: The Government of the US, as represented by the Secretary of the Navy
    Inventors: Costin Barbu, Maura C. Lohrenz