Patents by Inventor Malu Castellanos

Malu Castellanos 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).

  • COMPARING HISTOGRAMS
    Publication number: 20120246189
    Abstract: First data indicative of a first histogram and second data indicative of a second histogram are received and processed to determine quantitative differences between the first and second histograms. Third data is generated, which is indicative of the result of the quantitative differences.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 27, 2012
    Inventors: Malu Castellanos, Perla Ruiz, Umeshwar Dayal
  • Method for categorizing documents by multilevel feature selection and hierarchical clustering based on parts of speech tagging
    Patent number: 7139695
    Abstract: A method for categorizing documents is disclosed. The words composing the documents are tagged according to their parts of speech. A first group of features is selected corresponding to one of the parts of speech. The documents are grouped into clusters according to their semantic affinity to the first set of features and to each other. The clusters are refined into a hierarchy of progressively refined clusters, the features of which are selected based on corresponding parts of speech.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: November 21, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Malu Castellanos
  • Method for categorizing documents by multilevel feature selection and hierarchical clustering based on parts of speech tagging
    Publication number: 20030236659
    Abstract: A method for categorizing documents is disclosed. The words composing the documents are tagged according to their parts of speech. A first group of features is selected corresponding to one of the parts of speech. The documents are grouped into clusters according to their semantic affinity to the first set of features and to each other. The clusters are refined into a hierarchy of progressively refined clusters, the features of which are selected based on corresponding parts of speech.
    Type: Application
    Filed: June 20, 2002
    Publication date: December 25, 2003
    Inventor: Malu Castellanos