Patents by Inventor Hajime Wakahara

Hajime Wakahara 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).

  • Natural language processing apparatus, natural language processing method, natural language processing program, and computer-readable recording medium storing natural language processing program
    Patent number: 8880391
    Abstract: A natural language processing apparatus includes a result acquisition unit that acquires a plurality of analysis results indicating parts of speech of morphemes contained in one or more common sentences from a plurality of types of morphological analyzers, a pattern acquisition unit that detects a common segmentation point in the plurality of analysis results, extracts one or more parts of speech corresponding to a character string segmented at the common segmentation point from each of the analysis results, and acquires a set of the parts of speech as a part-of-speech differing pattern, and a candidate specifying unit that extracts the part-of-speech differing pattern with the number of appearances being equal to or less than a predetermined threshold and specifies the character string corresponding to the extracted part-of-speech differing pattern as a character string containing a candidate for an unknown word.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: November 4, 2014
    Assignee: Rakuten, Inc.
    Inventors: Satoshi Sekine, Hajime Wakahara
  • NATURAL LANGUAGE PROCESSING APPARATUS, NATURAL LANGUAGE PROCESSING METHOD, NATURAL LANGUAGE PROCESSING PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM STORING NATURAL LANGUAGE PROCESSING PROGRAM
    Publication number: 20130262085
    Abstract: A natural language processing apparatus includes a result acquisition unit that acquires a plurality of analysis results indicating parts of speech of morphemes contained in one or more common sentences from a plurality of types of morphological analyzers, a pattern acquisition unit that detects a common segmentation point in the plurality of analysis results, extracts one or more parts of speech corresponding to a character string segmented at the common segmentation point from each of the analysis results, and acquires a set of the parts of speech as a part-of-speech differing pattern, and a candidate specifying unit that extracts the part-of-speech differing pattern with the number of appearances being equal to or less than a predetermined threshold and specifies the character string corresponding to the extracted part-of-speech differing pattern as a character string containing a candidate for an unknown word.
    Type: Application
    Filed: November 28, 2011
    Publication date: October 3, 2013
    Applicant: RAKUTEN, INC.
    Inventors: Satoshi Sekine, Hajime Wakahara