Patents by Inventor Keiichirou Hoashi

Keiichirou Hoashi 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).

  • Scheme for filtering documents on network using relevant and non-relevant profiles
    Patent number: 7152063
    Abstract: A document filtering scheme capable of reducing the number of erroneously selected non-relevant documents without reducing the number of correctly selected relevant documents is disclosed. a non-relevant profile expressing non-relevant documents that are judged as having high similarities with respect to a relevant profile expressing a user's request but not matching with the user's request is utilized in addition to the relevant profile, such that each search target document for which the similarity with respect to the relevant profile is higher than a prescribed threshold for the relevant profile and the similarity with respect to the non-relevant profile is higher than a prescribed threshold for the non-relevant profile is removed as a non-relevant document.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: December 19, 2006
    Assignee: DDI Corporation
    Inventors: Keiichirou Hoashi, Naomi Inoue, Kazunori Matsumoto, Kazuo Hashimoto
  • Method and apparatus for automatic information filtering using URL hierarchical structure and automatic word weight learning
    Patent number: 6976070
    Abstract: Disclosed method and apparatus for automatic information filtering are capable of improving both precision and recall and accurately judging inappropriateness of the content even for a page that contains very few or no text information and only displays images, by utilizing an upper level URL of a URL given in a hierarchical structure. Also, disclosed method and apparatus for automatic information filtering are capable of setting weights of words easily and accurately and judging inappropriateness of the information by utilizing these weights, by using an automatic learning based on a linear discrimination function that can discriminate the inappropriate information and the appropriate information on a vector space.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: December 13, 2005
    Assignee: KDD Corporation
    Inventors: Keiichirou Hoashi, Naomi Inoue, Kazuo Hashimoto
  • Scheme for filtering documents on network using relevant and non-relevant profiles
    Publication number: 20010032204
    Abstract: A document filtering scheme capable of reducing the number of erroneously selected non-relevant documents without reducing the number of correctly selected relevant documents is disclosed. a non-relevant profile expressing non-relevant documents that are judged as having high similarities with respect to a relevant profile expressing a user's request but not matching with the user's request is utilized in addition to the relevant profile, such that each search target document for which the similarity with respect to the relevant profile is higher than a prescribed threshold for the relevant profile and the similarity with respect to the non-relevant profile is higher than a prescribed threshold for the non-relevant profile is removed as a non-relevant document.
    Type: Application
    Filed: February 28, 2001
    Publication date: October 18, 2001
    Applicant: DDI Corporation.
    Inventors: Keiichirou Hoashi, Naomi Inoue, Kazunori Matsumoto, Kazuo Hashimoto