Patents by Inventor Naoki Yoshinaga

Naoki Yoshinaga 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: 11969712
    Abstract: A catalyst for purification of exhaust gas in which Pd-based nanoparticles and ceria nanoparticles are supported on a composite metal oxide support containing alumina, ceria, and zirconia, wherein a molar ratio (Ce/Pd) of Ce and Pd supported on the support is 1 to 8, a proximity ? between Pd and Ce is 0.15 to 0.50, wherein the proximity ? is determined, based on Pd and Ce distribution maps in an element mapping image of energy dispersive X-ray analysis, by the following formula (1): ? = ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( ( I ? ( i , j ) - I ave ) ? ( T ? ( i , j ) - T ave ) ) ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( I ? ( i , j ) - I ave ) 2 - ? j = 0 N - 1 ? ? i = 0 M - 1 ? ( T ? ( i , j ) - T ave ) 2 , ( 1 ) a Pd dispersity after a heat-resistance test at 1050° C. for 25 hours is 0.8% or more.
    Type: Grant
    Filed: November 2, 2022
    Date of Patent: April 30, 2024
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Kumatani, Akira Morikawa, Masaoki Iwasaki, Miho Hatanaka, Taizo Yoshinaga, Masahide Miura, Takahiro Hayashi
  • Publication number: 20240039940
    Abstract: A learning apparatus includes: a learning unit that learns a first parameter and a second parameter that are included in a mapping model for mapping, to a region set based on a subspace set in advance and a distance from the subspace, a feature vector generated based on normal data input as training data, the first parameter being for generating the feature vector and the second parameter being for adjusting the distance.
    Type: Application
    Filed: December 14, 2020
    Publication date: February 1, 2024
    Applicant: NEC Corporation
    Inventors: Shohei Mitani, Naoki YOSHINAGA
  • Patent number: 11885720
    Abstract: A time series data processing apparatus according to the present invention includes an extracting unit configured to extract, from normal period time series data that is time series data of a period during which a measurement target is determined to be in a normal state of time series data including a plurality of parameters based on data measured from the measurement target, a combination of the plurality of parameters in which a value of another parameter with respect to a value of a predetermined parameter is maximum among combinations of the plurality of parameters, as a normal period maximum value.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 30, 2024
    Assignee: NEC CORPORATION
    Inventor: Naoki Yoshinaga
  • Publication number: 20230289845
    Abstract: In order to accurately estimate the behavior suitable for transforming a customer into a good customer, an estimation system 100 is configured to comprise: an acquisition unit 101; an estimation unit 102; and an output unit 103. The acquisition unit 101 acquires purchase data including at least one among the purchase product, the total purchase amount, and the visit frequency of a target customer. The estimation unit 102 estimates a purchasing behavior for transforming the target customer into a good customer, on the basis of the purchase data acquired by the acquisition unit 101, by using an estimation model generated on the basis of the purchase data on a plurality of customers and the conditions of good customers. The output unit 103 outputs the purchasing behavior estimated by the estimation unit 102.
    Type: Application
    Filed: September 28, 2020
    Publication date: September 14, 2023
    Applicant: NEC Corporation
    Inventor: Naoki Yoshinaga
  • Publication number: 20230153428
    Abstract: A plurality of event types associated with a plurality of events which emerge in the future with high emergence probability is selected by use of event series representing at least multiple types of events output from a target system in the past time interval and output times of events and a selection model configured to select event types to emerge in the future with high emergence probability among multiple types of events included in the event series. An order of the selected events to emerge in the future and time intervals therebetween are predicted by use of the selected event types and a series prediction model configured to estimate the order of the selected events to emerge in the future and the time intervals therebetween.
    Type: Application
    Filed: March 30, 2020
    Publication date: May 18, 2023
    Applicant: NEC Corporation
    Inventors: Shohei Mitani, Naoki Yoshinaga
  • Publication number: 20230038902
    Abstract: The information processing device includes a matching unit 32A and a display control unit 33A. The matching unit 32A is configured to match a database 21A, which associates first detection data indicative of a past state of maintenance target equipment 3 with first maintenance information relating to maintenance of the maintenance target equipment 3 in the past state, with second detection data indicative of a current state of the maintenance target equipment 3. The display control unit 33A is configured to display, based on a result of the matching by the matching unit 32A, second maintenance information relating to maintenance in accordance with the current state of the maintenance target equipment 3 on a display unit 45A.
    Type: Application
    Filed: January 9, 2020
    Publication date: February 9, 2023
    Applicant: NEC Corporation
    Inventors: Naoki YOSHINAGA, Yuzuru TATEYAMA
  • Publication number: 20220334576
    Abstract: A monitoring method, to be performed by a monitoring device that performs analysis of time-series data, includes calculating statistical information corresponding to a comparison result between time-series data of a search object and past time-series data, and outputting the calculated statistical information.
    Type: Application
    Filed: June 10, 2019
    Publication date: October 20, 2022
    Applicant: NEC Corporation
    Inventor: Naoki YOSHINAGA
  • Publication number: 20220334030
    Abstract: A time series data processing apparatus according to the present invention includes an extracting unit configured to extract, from normal period time series data that is time series data of a period during which a measurement target is determined to be in a normal state of time series data including a plurality of parameters based on data measured from the measurement target, a combination of the plurality of parameters in which a value of another parameter with respect to a value of a predetermined parameter is maximum among combinations of the plurality of parameters, as a normal period maximum value.
    Type: Application
    Filed: October 18, 2019
    Publication date: October 20, 2022
    Applicant: NEC Corporation
    Inventor: Naoki YOSHINAGA
  • Publication number: 20220180369
    Abstract: A fraud detection device 80 for detecting a fraudulent transaction in an operation of a financial institution includes a target data extraction unit 81 which extracts target data by excluding normal transaction data from the transaction data in the operation by unsupervised learning, a first learning unit 82 which learns a first hierarchical mixed model using training data, among the target data, which takes positive examples for the data indicating the fraudulent transaction and takes negative examples for the remaining data other than the positive examples, and a data exclusion unit 83 which excludes, from the target data, the target data which is set as negative example training data and is classified as a negative example by the first hierarchical mixed model.
    Type: Application
    Filed: June 1, 2020
    Publication date: June 9, 2022
    Applicant: NEC Corporation
    Inventors: Minoru OKUDA, Naoki YOSHINAGA
  • Patent number: 11341774
    Abstract: An information processing apparatus, a data generation method, and a program capable of obtaining useful information about a person from video data are provided. An information processing apparatus (1) according to an example embodiment includes a base-information acquisition unit (2) that acquires a plurality of types of pieces of base information based on video data in which at least one person is shown, the pieces of base information being pieces of information used to monitor a person, and a base-information integration unit (3) that generates integrated information by integrating, among the plurality of pieces of base information, those that satisfy a predetermined relation as information of one and the same person.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: May 24, 2022
    Assignee: NEC CORPORATION
    Inventor: Naoki Yoshinaga
  • Publication number: 20210133435
    Abstract: An information processing apparatus, a data generation method, and a program capable of obtaining useful information about a person from video data are provided. An information processing apparatus (1) according to an example embodiment includes a base-information acquisition unit (2) that acquires a plurality of types of pieces of base information based on video data in which at least one person is shown, the pieces of base information being pieces of information used to monitor a person, and a base-information integration unit (3) that generates integrated information by integrating, among the plurality of pieces of base information, those that satisfy a predetermined relation as information of one and the same person.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 6, 2021
    Applicant: NEC Corporation
    Inventor: Naoki YOSHINAGA
  • Patent number: 10157113
    Abstract: In an invariant relation analysis, a capability to detect abnormalities is improved and erroneous abnormality reports are reduced. A system analysis device (100) includes a correlation model generation unit (130) and a learning reliability calculation unit (140). The correlation model generation unit (130) generates, based on time series of a plurality of metrics in a system in a learning period, a correlation model that includes a correlation between metrics. The learning reliability calculation unit (140) calculates learning reliability of the correlation, based on a behavior of a time series of each of metrics relevant to the correlation included in the correlation model, in the learning period.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: December 18, 2018
    Assignee: NEC CORPORATION
    Inventor: Naoki Yoshinaga
  • Publication number: 20170286841
    Abstract: This invention provides a monitoring device and the like which exhibit high capability of detecting a state related to a system even when the system allows a plurality of objects to be monitored to complexly cooperate with each other. A monitoring device 1 includes a first model generation unit which divides, of first time-series information related to an object to be monitored, second time-series information associated with each item and generates models related to the pieces of divided information, and a determination unit which by applies third time-series information to the models to determine whether a correlation is maintained and performs determination related to each item based on results of the determining.
    Type: Application
    Filed: September 2, 2015
    Publication date: October 5, 2017
    Applicant: NEC CORPORATION
    Inventors: Naoki YOSHINAGA, Masanao NATSUMEDA
  • Patent number: 9658916
    Abstract: A system analysis device 100 includes a whole model generation unit 1021 which generates a whole model which is obtained by modeling elements or whole of a system and which includes a plurality of partial models, a core model generation unit 1023 which extracts, from a plurality of whole models generated on the basis of the same event, the partial models whose prediction precision satisfies a predetermined criteria, and generates a core model by integrating the extracted partial models, and a threshold setting unit 1024 which calculates a distance between the core model and the plurality of whole models using a predetermined definition, and outputs the distance as a threshold value for error determination using the core model.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: May 23, 2017
    Assignee: NEC CORPORATION
    Inventors: Naoki Yoshinaga, Masanao Natsumeda
  • Publication number: 20170139794
    Abstract: In an invariant relation analysis, a capability to detect abnormalities is improved and erroneous abnormality reports are reduced. A system analysis device (100) includes a correlation model generation unit (130) and a learning reliability calculation unit (140). The correlation model generation unit (130) generates, based on time series of a plurality of metrics in a system in a learning period, a correlation model that includes a correlation between metrics. The learning reliability calculation unit (140) calculates learning reliability of the correlation, based on a behavior of a time series of each of metrics relevant to the correlation included in the correlation model, in the learning period.
    Type: Application
    Filed: May 11, 2015
    Publication date: May 18, 2017
    Applicant: NEC Corporation
    Inventor: Naoki Yoshinaga
  • Patent number: 9601010
    Abstract: An assessment device (1) includes: a request acquirer (11) that accepts an evaluation target from a user terminal (7); a model acquirer (13) and a data acquirer (14) that select a main model for evaluating the evaluation target accepted by the request acquirer (11) from a plurality of models and select supplemental data to be supplemented for using the main model (data to be input into the main model, a sub-model, or data to be input into the sub-model) when the data to be input into the main model is insufficient; an executor (15) that evaluates the evaluation target based on the main model and supplemental data selected by the model acquirer (13) and the data acquirer (14); and a transmitter (16) that provides a result of the evaluation by the executor (15) to the outside.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: March 21, 2017
    Assignee: NEC Corporation
    Inventors: Satoko Itaya, Peter Davis, Naoki Yoshinaga, Rie Tanaka, Taku Konishi, Shinichi Doi
  • Patent number: 9410231
    Abstract: A steel sheet, including: as chemical components, by mass %, 0.05% to 0.35% of C; 0.05% to 2.0% of Si; 0.8% to 3.0% of Mn; 0.01% to 2.0% of Al; equal to or less than 0.1% of P; equal to or less than 0.05% of S; equal to or less than 0.01% of N; and the balance including iron and inevitable impurities, wherein the steel sheet comprises 50% or more of a ferrite phase, a bainite phase, and a tempered martensite phase, 3% or more of a retained austenite phase, and 50% or more of the crystal grains of the retained austenite phase satisfy Expression 1, wherein a carbon concentration at a position of center of gravity is Cgc and a carbon concentration at a grain boundary is Cgb.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: August 9, 2016
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Riki Okamoto, Natsuko Sugiura, Kohichi Sano, Chisato Wakabayashi, Naoki Yoshinaga, Kaoru Kawasaki
  • Publication number: 20160218931
    Abstract: In the inter-element influence determination apparatus, a receiver receives request information from a user terminal. A system information storage device stores system information containing attribute information indicating attributes of each element in a system. A relationship information storage device stores relationship information indicating relationships in which direct interaction is provided between elements. On the basis of the attribute information and the relationship information, an influence determiner virtually connects each element included in the system, thereby creating a system network model which models the system, and on the basis of the system network model, determines whether a second element is influenced when a change is made to a first element. A transmitter transmits to the user terminal determination result information indicating the result of the determination by the influence determiner.
    Type: Application
    Filed: September 29, 2014
    Publication date: July 28, 2016
    Applicant: NEC Corporation
    Inventors: Satoko ITAYA, Naoki YOSHINAGA, Rie TANAKA, Taku KONISHI, Shinichi DOI, Peter DAVIS
  • Publication number: 20160132373
    Abstract: A system analysis device 100 includes a whole model generation unit 1021 which generates a whole model which is obtained by modeling elements or whole of a system and which includes a plurality of partial models, a core model generation unit 1023 which extracts, from a plurality of whole models generated on the basis of the same event, the partial models whose prediction precision satisfies a predetermined criteria, and generates a core model by integrating the extracted partial models, and a threshold setting unit 1024 which calculates a distance between the core model and the plurality of whole models using a predetermined definition, and outputs the distance as a threshold value for error determination using the core model.
    Type: Application
    Filed: May 29, 2014
    Publication date: May 12, 2016
    Inventors: NAOKI YOSHINAGA, MASANAO NATSUMEDA
  • Patent number: 9290835
    Abstract: The invention provides a cold-rolled steel sheet excellent in paint bake hardenability and ordinary-temperature non-aging property comprising, in mass %, C: 0.0005-0.0040%, Si: 0.8% or less, Mn: 2.2% or less, S: 0.0005-0.009%, Cr: 0.4-1.3%, O: 0.003-0.020%, P: 0.045-0.12%, B: 0.0002-0.0010%, Al: 0.008% or less, N: 0.001-0.007%, and a balance of Fe and unavoidable impurities. Ultra-low-carbon steel retaining solute N and containing added Cr, P, B and O is used to produce hot-rolled and cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet that exhibit both high paint bake hardenability and ordinary-temperature non-aging property.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: March 22, 2016
    Assignee: Nippon Steel & Summitomo Metal Corporation
    Inventors: Naoki Yoshinaga, Naoki Maruyama, Manabu Takahashi, Natsuko Sugiura