Patents by Inventor Kazufumi KOJIMA

Kazufumi KOJIMA 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).

  • Publication number: 20240168960
    Abstract: In order to extract, with high accuracy, useful information from contribution information of social media, the present invention provides a processing apparatus 10 including: an acquisition unit 11 that acquires contribution information relating to a target area; a computation unit 12 that computes a degree of reliability of the contribution information, based on at least two of an activity area of a contributor of the contribution information, a degree of reliability of an estimation result of the activity area, a degree of disclosure of a profile of the contributor, an attribute of the contributor, an attribute of the activity area for the contributor, and a category of a content of the contribution information; and an output unit 13 that outputs the contribution information in which a degree of reliability of the contribution information is higher than a threshold value.
    Type: Application
    Filed: November 10, 2023
    Publication date: May 23, 2024
    Applicant: NEC corporation
    Inventors: Masahiro TANI, Keisuke Ikeda, Kazufumi Kojima
  • Publication number: 20240121571
    Abstract: To improve precision in decision in a technique for deciding an activity area of a target user, based on information of another person, the present invention provides a processing apparatus 10 including: a determination unit 11 that determines one or a plurality of reference users having a predetermined relationship with a target user whose activity area in a target period is to be estimated, based on post information posted on social media by each user within a search period being set based on the target period; an estimation unit 12 that estimates an activity area of the reference user in the target period; and a decision unit 13 that decides an activity area of the target user in the target period, based on an activity area of the reference user in the target period.
    Type: Application
    Filed: December 4, 2023
    Publication date: April 11, 2024
    Applicant: NEC Corporation
    Inventors: Keisuke Ikeda, Masahiro Tani, Kazufumi Kojima
  • Publication number: 20240037592
    Abstract: An imparting unit determines whether to issue a coupon or calculates a point on the basis of a staying time in the limited area, the coupon and the point being exchangeable with an article provided in the limited area by a user who is a soon-to-be passenger to board a plane. The limited area indicates an area in which a soon-to-be passenger stays until he or she boards a plane after a security check. In addition, the staying time in the limited area indicates an elapsed time from entry to the limited area to a predetermined imparted timing. An output unit outputs, on a mobile terminal of the user, information notifying of an issuance of a coupon when the imparting unit determines to issue the coupon, or information about the point calculated by the imparting unit.
    Type: Application
    Filed: September 29, 2020
    Publication date: February 1, 2024
    Applicant: NEC Corporation
    Inventors: Masahiro Tani, Kazufumi Kojima, Keisuke Ikeda
  • Publication number: 20230410221
    Abstract: An information processing apparatus (2000) determines whether a content (30-1) of a relevant account (20-1) associated with a target account (10-1) and a content (30-2) of a relevant account (20-2) associated with a target account (10-2) are similar. When the content (30-1) and the content (30-2) are similar, the information processing apparatus (2000) executes predetermined processing related to the target account (10-1) and the target account (10-2).
    Type: Application
    Filed: August 30, 2023
    Publication date: December 21, 2023
    Applicant: NEC Corporation
    Inventors: Masahiro TANI, Kazufumi KOJIMA
  • Publication number: 20230410222
    Abstract: An information processing apparatus (2000) determines whether a content (30-1) of a relevant account (20-1) associated with a target account (10-1) and a content (30-2) of a relevant account (20-2) associated with a target account (10-2) are similar. When the content (30-1) and the content (30-2) are similar, the information processing apparatus (2000) executes predetermined processing related to the target account (10-1) and the target account (10-2).
    Type: Application
    Filed: August 30, 2023
    Publication date: December 21, 2023
    Applicant: NEC Corporation
    Inventors: Masahiro Tani, Kazufumi KOJIMA
  • Publication number: 20230410220
    Abstract: An information processing apparatus (2000) determines whether a content (30-1) of a relevant account (20-1) associated with a target account (10-1) and a content (30-2) of a relevant account (20-2) associated with a target account (10-2) are similar. When the content (30-1) and the content (30-2) are similar, the information processing apparatus (2000) executes predetermined processing related to the target account (10-1) and the target account (10-2).
    Type: Application
    Filed: August 30, 2023
    Publication date: December 21, 2023
    Applicant: NEC Corporation
    Inventors: Masahiro TANI, Kazufumi KOJIMA
  • Patent number: 11843669
    Abstract: An acquiring unit acquires information of the residence of one or more second users each having a second social media account related to a first user having a first social media account. An estimating unit estimates the residence of the first user from the information of the residence of the second user. A detecting unit detects a posting area at which the first user has posted on social media. A comparing unit compares the detected posting area with the estimated residence of the first user. A determining unit determines whether the posting area is an ordinary activity area or an extraordinary activity area for the first user based on the result of the comparison.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: December 12, 2023
    Assignee: NEC CORPORATION
    Inventors: Keisuke Ikeda, Kazufumi Kojima, Masahiro Tani
  • Publication number: 20230367806
    Abstract: To reduce a decrease in search accuracy in a technique for comparing feature values acquired by collecting a local feature value by patch unit, the present invention provides an image processing apparatus 10 including: an image processing unit 11 that detects an object region occupied by an object in an image; a patch size decision unit 12 that decides a patch size, based on a size of the object region; a patch unit feature value-computation unit 13 that sets a plurality of patches having the patch size described above in the object region, and computes a patch unit feature value acquired by collecting a local feature value in a patch for each patch; and a search unit 14 that searches for an image similar to a query image from among a plurality of reference images by using the patch unit feature value.
    Type: Application
    Filed: April 28, 2023
    Publication date: November 16, 2023
    Applicant: NEC Corporation
    Inventors: Kazufumi KOJIMA, Masahiro Tani, Keisuke Ikeda
  • Publication number: 20230267506
    Abstract: A matching device (10) includes: a cyber attribute extraction unit (11) that extracts, based on social media information of a plurality of accounts, a plurality of pieces of cyber attribute information being personal attributes in a cyberspace of the plurality of accounts; a physical attribute extraction unit (12) that extracts, based on an image acquired by capturing a real world, physical attribute information being a personal attribute in a physical space of a person in the image; a calculation unit (13) that calculates a degree of agreement between the plurality of pieces of extracted cyber attribute information and the extracted physical attribute information; and an output unit (14) that compares a piece of cyber attribute information selected based on the degree of agreement among the plurality of pieces of cyber attribute information with the physical attribute information, and outputs a result of the comparison.
    Type: Application
    Filed: June 22, 2020
    Publication date: August 24, 2023
    Applicant: NEC Corporation
    Inventors: Masahiro TANI, Kazufumi KOJIMA, Keisuke IKEDA
  • Publication number: 20230237605
    Abstract: A trustability analyzing system (100) includes: a friend list acquisition unit (111) configured to acquire, via a network, person attribute information of a holder of an account that is subject to determination; a friend information acquisition unit (112) configured to acquire, via the network, a list of friend accounts of the account that is subject to determination; an attribute information acquisition unit (113) configured to acquire, based on the list of friend accounts, information about the friend via the network; a person attribute estimation unit (121) configured to estimate, based on the information about the friends, person attributes of the holder of the account that is subject to determination; a distance calculation unit (122) configured to calculate a distance between the person attribute information acquired by the person attribute acquisition means and the person attributes estimated by the person attribute estimation means; and a trust level calculation unit (123) configured to calculate, bas
    Type: Application
    Filed: June 24, 2020
    Publication date: July 27, 2023
    Applicant: NEC Corporation
    Inventors: Masahiro TANI, Kazufumi Kojima, Keisuke Ikeda
  • Publication number: 20230239357
    Abstract: An acquiring unit acquires information of the residence of one or more second users each having a second social media account related to a first user having a first social media account. An estimating unit estimates the residence of the first user from the information of the residence of the second user. A detecting unit detects a posting area at which the first user has posted on social media. A comparing unit compares the detected posting area with the estimated residence of the first user. A determining unit determines whether the posting area is an ordinary activity area or an extraordinary activity area for the first user based on the result of the comparison.
    Type: Application
    Filed: June 18, 2020
    Publication date: July 27, 2023
    Applicant: NEC Corporation
    Inventors: Keisuke IKEDA, Kazufumi KOJIMA, Masahiro TANI
  • Publication number: 20230222167
    Abstract: An account retrieval system (2) includes: a query generation apparatus (100) that generates an account name of a retrieval query based on input account information of an account; and an account collection apparatus (200) that retrieves, by using the retrieval query generated by the query generation apparatus (100), account information of an account name corresponding to the account name of the retrieval query from social media information.
    Type: Application
    Filed: May 29, 2020
    Publication date: July 13, 2023
    Applicant: NEC Corporation
    Inventors: Kazufumi KOJIMA, Masahiro TANI, Keisuke IKEDA
  • Patent number: 11575641
    Abstract: Provided is an estimating device, an estimating method, and an estimating program that each make it possible to estimate the area of activity of a target user with a smaller amount of information. An estimating device includes a first position distribution generating unit configured to generate a first position distribution of a target user on social media based on account information of the target user, a second position distribution generating unit configured to generate a second position distribution of a friend who is friends with the target user on the social media based on account information of the friend, and an estimating unit configured to estimate an area of activity of the target user based on the generated first position distribution and the generated second position distribution.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: February 7, 2023
    Assignee: NEC CORPORATION
    Inventors: Keisuke Ikeda, Kazufumi Kojima, Masahiro Tani
  • Patent number: 11561970
    Abstract: An information processing apparatus capable of accurately specifying identification information whose users are the same user regardless of information registered by users is provided.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: January 24, 2023
    Assignee: NEC CORPORATION
    Inventors: Kazufumi Kojima, Masahiro Tani
  • Publication number: 20220357170
    Abstract: A route display apparatus (10) according to the present disclosure includes: an acquisition unit (11) that acquires friend account information of a friend account that is connected online to an account of interest; a specification unit (12) that specifies a traffic site near an activity site of a friend user who uses the friend account based on the acquired friend account information; a calculation unit (13) that calculates an estimated movement route of a user of interest who uses the account of interest, the estimated movement route including the specified traffic site; and a display unit (14) that displays the calculated estimated movement route.
    Type: Application
    Filed: June 21, 2019
    Publication date: November 10, 2022
    Applicant: NEC Corporation
    Inventors: Kazufumi KOJIMA, Masahiro TANI, Keisuke IKEDA
  • Publication number: 20220284062
    Abstract: To provide a sufficient amount of information and increase a degree of satisfaction of a user in a technique for providing information specified for a community. According to the present invention, an information providing apparatus 10 including a post-information acquisition unit 11 that acquires post information including a post content posted on the Internet and position information, a sensor-information acquisition unit 12 that acquires sensor information including data generated by a sensor and installation position information of the sensor, a section-information generation unit 13 that generates, based on the post information and the sensor information, section information relating to each of a plurality of observation sections, and an output unit 14 that outputs the section information, is provided.
    Type: Application
    Filed: February 22, 2022
    Publication date: September 8, 2022
    Applicant: NEC Corporation
    Inventors: Keisuke IKEDA, Kazufumi Kojima, Masahiro Tani
  • Publication number: 20220277402
    Abstract: Estimation of the range of activities of a target user is enabled in a relatively narrow range. A target user whose location is to be calculated has an account in social media. An offline friend determination means (111) calculates an offline friendship level on the basis of friend information obtained from at least one social media account related to the target user. The offline friendship level is the degree of friendship in real space between the target user and the at least one social media account related to the target user. A friend weight calculation means (112) calculates a weight to be assigned to the friend information on the basis of the offline friendship level. A candidate location score calculation means (113) calculates a score representing the possibility of the target user being active at a candidate location on the basis of the friend information and the corresponding weight.
    Type: Application
    Filed: August 9, 2019
    Publication date: September 1, 2022
    Applicant: NEC Corporation
    Inventors: Keisuke IKEDA, Kazufumi KOJIMA, Masahiro TANI
  • Publication number: 20220239620
    Abstract: Provided is an estimating device, an estimating method, and an estimating program that each make it possible to estimate the area of activity of a target user with a smaller amount of information. An estimating device includes a first position distribution generating unit configured to generate a first position distribution of a target user on social media based on account information of the target user, a second position distribution generating unit configured to generate a second position distribution of a friend who is friends with the target user on the social media based on account information of the friend, and an estimating unit configured to estimate an area of activity of the target user based on the generated first position distribution and the generated second position distribution.
    Type: Application
    Filed: January 19, 2022
    Publication date: July 28, 2022
    Applicant: NEC Corporation
    Inventors: Keisuke IKEDA, Kazufumi Kojima, Masahiro Tani
  • Publication number: 20210240701
    Abstract: An information processing apparatus capable of accurately specifying identification information whose users are the same user regardless of information registered by users is provided.
    Type: Application
    Filed: June 5, 2018
    Publication date: August 5, 2021
    Applicant: NEC Corporation
    Inventors: Kazufumi KOJIMA, Masahiro TANI
  • Publication number: 20210019553
    Abstract: An information processing apparatus (2000) determines whether a content (30-1) of a relevant account (20-1) associated with a target account (10-1) and a content (30-2) of a relevant account (20-2) associated with a target account (10-2) are similar. When the content (30-1) and the content (30-2) are similar, the information processing apparatus (2000) executes predetermined processing related to the target account (10-1) and the target account (10-2).
    Type: Application
    Filed: March 30, 2018
    Publication date: January 21, 2021
    Applicant: NEC CORPORATION
    Inventors: Masahiro TANI, Kazufumi KOJIMA