Patents by Inventor Ryota Mibe

Ryota Mibe 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: 11544600
    Abstract: A prediction rationale analysis apparatus includes a prediction model that stores prediction models designed or trained to solve common problems, a prediction execution part that makes a prediction on the prediction target based on each prediction model to derive a model prediction result, a prediction rationale analyzer that identifies a set of prediction models based on which the model prediction result identical or approximate to the external prediction result is derived from the prediction target, and infers, as a prediction rationale for the external prediction result, a property common to the prediction models belonging to the set, and a prediction rationale difference analyzer that compares a property of any prediction model with the prediction rationale for the external prediction result to derive a prediction rationale difference indicating a difference in prediction rationale between the prediction model and the external prediction, and outputs information based on the prediction rationale differenc
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: January 3, 2023
    Assignee: Hitachi, Ltd.
    Inventors: Ryosuke Tsuchiya, Shuhei Nojiri, Ryota Mibe, Tarou Sakisaka
  • Publication number: 20210279608
    Abstract: A prediction rationale analysis apparatus includes a prediction model that stores prediction models designed or trained to solve common problems, a prediction execution part that makes a prediction on the prediction target based on each prediction model to derive a model prediction result, a prediction rationale analyzer that identifies a set of prediction models based on which the model prediction result identical or approximate to the external prediction result is derived from the prediction target, and infers, as a prediction rationale for the external prediction result, a property common to the prediction models belonging to the set, and a prediction rationale difference analyzer that compares a property of any prediction model with the prediction rationale for the external prediction result to derive a prediction rationale difference indicating a difference in prediction rationale between the prediction model and the external prediction, and outputs information based on the prediction rationale differenc
    Type: Application
    Filed: September 9, 2020
    Publication date: September 9, 2021
    Applicant: Hitachi, Ltd.
    Inventors: Ryosuke Tsuchiya, Shuhei Nojiri, Ryota Mibe, Tarou Sakisaka
  • Publication number: 20210191933
    Abstract: A data analysis device 100 includes a storage device 101 configured to store pieces of knowledge used for data analysis, and a computing device 104 configured to perform a process of extracting variables defining the pieces of knowledge from the pieces of knowledge, a process of specifying values corresponding to the variables for data to be analyzed, and a process of performing, based on the values corresponding to the variables and a predetermined evaluation index, an analysis process for a relation between the variables and the evaluation index to specify information related to a combination of the variables for improving the evaluation index as a suggestion for improvement of the evaluation index.
    Type: Application
    Filed: September 4, 2020
    Publication date: June 24, 2021
    Inventors: Tadahisa KATO, Yasunari TAKAI, Yuichiro NAKAGAWA, Ryota MIBE, Toshiyuki UKAI, Yasuharu NAMBA
  • Patent number: 10489428
    Abstract: The present invention has an object to analyze, regarding an existing system without a source code, the relationship between input items and internal system processing with respect to output items and present the analysis results to a user. An existing system processing specification extractor is an apparatus for making an existing system operate and analogizing input items of the existing system and internal system processing patterns without performing analysis of implementation and includes: an output data change information acquisition unit that classifies changes of output data associated with input to the existing system on the basis of types of changes of each output element; and an internal system processing specifying unit that combines the classifications obtained by making different input to the existing system and specifies a type of processing based on a usage pattern of an input item value.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 26, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Yasunari Takai, Katsumi Kawai, Shuhei Nojiri, Ryota Mibe, Kiyoshi Yamaguchi
  • Patent number: 10339035
    Abstract: A test DB data generation method for generating a database for testing, which approximates an existing database, the test DB data generation apparatus comprising: extracting distribution information of values of each column of the existing database; extracting column dependency information of the existing database; and generating test DB data based on the distribution information and the column dependency information.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: July 2, 2019
    Assignee: HITACHI, LTD.
    Inventors: Keishi Ooshima, Yasunori Hashimoto, Ryota Mibe, Hirofumi Danno, Kiyoshi Yamaguchi
  • Patent number: 10162601
    Abstract: In order to realize a method for analyzing an impact of change with less misidentification and missing, an apparatus for analyzing an impact of change for investigating a change impact range caused by a change in requirements and specifications includes: a storage unit that stores design information and keywords; an input unit that inputs a trace condition including the design information representing an origin of a change impact analysis in design conditions stored in the storage unit and the keywords stored in the storage unit; a CPU that receives the trace condition including the design information representing the origin of the change impact analysis and the keywords from the input unit, and calculates an influence score representing a probability of the influence caused by the change in the requirements and the specifications for each of the design information; and a display unit that outputs a result calculated by the CPU.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: December 25, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Yasunari Takai, Katsumi Kawai, Yusuke Jin, Ryosuke Tsuchiya, Ryota Mibe, Tarou Sakisaka
  • Publication number: 20180081637
    Abstract: In order to realize a method for analyzing an impact of change with less misidentification and missing, an apparatus for analyzing an impact of change for investigating a change impact range caused by a change in requirements and specifications includes: a storage unit that stores design information and keywords; an input unit that inputs a trace condition including the design information representing an origin of a change impact analysis in design conditions stored in the storage unit and the keywords stored in the storage unit; a CPU that receives the trace condition including the design information representing the origin of the change impact analysis and the keywords from the input unit, and calculates an influence score representing a probability of the influence caused by the change in the requirements and the specifications for each of the design information; and a display unit that outputs a result calculated by the CPU.
    Type: Application
    Filed: January 6, 2017
    Publication date: March 22, 2018
    Inventors: Yasunari TAKAI, Katsumi KAWAI, Yusuke JIN, Ryosuke TSUCHIYA, Ryota MIBE, Tarou SAKISAKA
  • Publication number: 20170344917
    Abstract: An operation specification reproduction system includes: a case flowchart generation unit generating, on the basis of operation log data comprising records of necessary operations performed by persons in charge in order to execute respective cases, a case flowchart showing flows of operations performed by the persons in charge; a template generation unit for generating, on the basis of department data indicating association between responsible departments and the operations and the case flowchart generated by the case flowchart generation unit, an operation hierarchy template showing relationship between the responsible departments and the operations AA Discontinuity between persons in charge; and an operation flowchart generation unit for generating, on the basis of the operation hierarchy template and department template generated by the template generation unit, an operation flowchart showing the flows of operations performed by each department.
    Type: Application
    Filed: January 22, 2016
    Publication date: November 30, 2017
    Applicant: HITACHI, LTD.
    Inventors: Ryota MIBE, Hirofumi DANNO, Hideaki ITO, Tadashi TANAKA, Yuichiro NAKAGAWA
  • Publication number: 20170270185
    Abstract: The present invention has an object to analyze, regarding an existing system without a source code, the relationship between input items and internal system processing with respect to output items and present the analysis results to a user. An existing system processing specification extractor is an apparatus for making an existing system operate and analogizing input items of the existing system and internal system processing patterns without performing analysis of implementation and includes: an output data change information acquisition unit that classifies changes of output data associated with input to the existing system on the basis of types of changes of each output element; and an internal system processing specifying unit that combines the classifications obtained by making different input to the existing system and specifies a type of processing based on a usage pattern of an input item value.
    Type: Application
    Filed: August 1, 2016
    Publication date: September 21, 2017
    Inventors: Yasunari TAKAI, Katsumi KAWAI, Shuhei NOJIRI, Ryota MIBE, Kiyoshi YAMAGUCHI
  • Publication number: 20170140309
    Abstract: An attribute having influence on a business flow is automatically extracted among one or more attributes associated with the business flow when the business flow is restored based on history data of business performed on a business system. An event sequence variation indicating an order of an attribute name is calculated based on a chronological relation of an attribute value of a date and time from history data of the business configured with an attribute name and an attribute value of business, the number of appearances of each attribute value of each attribute other than a date and time is counted for each event sequence variation, event sequences that are similar in a distribution of the number of appearances are grouped, and business flows generated for respective groups are integrated.
    Type: Application
    Filed: November 7, 2016
    Publication date: May 18, 2017
    Applicant: HITACHI, LTD.
    Inventors: Yasunori HASHIMOTO, Ryota MIBE, Hirofumi DANNO, Katsumi KAWAI, Keishi OOSHIMA, Kiyoshi YAMAGUCHI, Makoto KIMURA
  • Publication number: 20170131973
    Abstract: Mismatches between software specifications are detected by dependence relation verification.
    Type: Application
    Filed: March 25, 2014
    Publication date: May 11, 2017
    Applicant: HITACHI, LTD.
    Inventors: Masatoshi Murakami, Yuichiroh Nakagawa, Ryota Mibe, Naoki Furuya
  • Publication number: 20170091082
    Abstract: A test DB data generation method for generating a database for testing, which approximates an existing database, the test DB data generation apparatus comprising: extracting distribution information of values of each column of the existing database; extracting column dependency information of the existing database; and generating test DB data based on the distribution information and the column dependency information.
    Type: Application
    Filed: September 23, 2016
    Publication date: March 30, 2017
    Applicant: Hitachi, Ltd.
    Inventors: Keishi Ooshima, Yasunori Hashimoto, Ryota Mibe, Hirofumi Danno, Kiyoshi Yamaguchi
  • Patent number: 9436713
    Abstract: A database analyzer includes a data sorting unit sorting a data group acquired from an analysis target database based on data values in a table column and storing it as analysis target data in a storage unit; a data pattern creation processing unit creating a group for each data value based on differences between the data values and storing a data pattern in the storage unit; a data pattern judgment processing unit for judging validity of the data pattern; and a data pattern transformation processing unit for reconstructing the data pattern with respect to constituent elements of each group included in the data pattern by transforming each group in accordance with a specified conversion rule for converting the constituent elements, which are conceptually similar to each other, into the same constituent element, and storing it in the storage unit if a negative result is obtained for the validity judgment.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: September 6, 2016
    Assignee: HITACHI, LTD.
    Inventors: Yasunori Hashimoto, Ryota Mibe, Kentaro Yoshimura, Hirofumi Danno, Sadahiro Ishikawa, Kiyoshi Yamaguchi
  • Publication number: 20160004968
    Abstract: A correlation rule analysis apparatus extracts data dependence relation and restriction conditions of database columns of a database from data stored in the database. The correction rule analysis apparatus includes a correlation rule extraction part which extracts information of simultaneous appearance relation of data among plural columns as correlation rules from inputted database table data, a correlation rule summarization part which summarizes or puts the extracted correlation rules together on the basis of specific community and a summarization result appropriateness judgment part which calculates usefulness indexes as the data dependence relation and the restriction conditions from appearance frequency and combination in the summarized correlation rules.
    Type: Application
    Filed: February 4, 2015
    Publication date: January 7, 2016
    Applicant: HITACHI, LTD.
    Inventors: Yasunori HASHIMOTO, Keishi OOSHIMA, Hirofumi DANNO, Ryota MIBE, Kiyoshi YAMAGUCHI
  • Patent number: 9015658
    Abstract: A device and method automatically generate a program for buffering differences based on characteristics of a component. A buffer program for buffering differences of the way to use a component during different software environments is automatically generated. The device includes a controller for executing automatic generation of the buffer program, a memory including control information and a processing program, an input device for inputting the processing content of the component, and an output device for outputting the automatically generated buffer program. The memory records a plurality of forms for buffering the component as the control information and the controller extracts characteristic information based on the processing content of the component and records the extracted characteristic information as control information in the memory, selects a specified form based on the characteristic information, and generates the buffer program based on the selected form and the characteristic information.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: April 21, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Yasunori Hashimoto, Ryota Mibe, Shuhei Nojiri, Sadahiro Ishikawa, Kiyoshi Yamaguchi, Kentaro Yoshimura
  • Publication number: 20150032708
    Abstract: A database analysis apparatus pays its attention to table columns more than two constituting a table among plural tables that a database holds, and analyzes automatically a dependence and a limitation condition that exist between the table columns from a tendency of appearance at the same time of data which each table column maintains, which comprises a data category calculation means to calculate a method of categorizing a data group from association rules generated from the data group of two or more table columns and an association rules reconstruction means to generate association rules of the best granularity by reconstructing the association rules based on the result of the above categorizing.
    Type: Application
    Filed: July 24, 2014
    Publication date: January 29, 2015
    Applicant: HITACHI, LTD.
    Inventors: Yasunori HASHIMOTO, Ryota MIBE, Kentaro YOSHIMURA, Hirofumi DANNO, Keishi OSHIMA, Sadahiro ISHIKAWA, Kiyoshi YAMAGUCHI
  • Publication number: 20140122445
    Abstract: A database analyzer includes a data sorting unit sorting a data group acquired from an analysis target database based on data values in a table column and storing it as analysis target data in a storage unit; a data pattern creation processing unit creating a group for each data value based on differences between the data values and storing a data pattern in the storage unit; a data pattern judgment processing unit for judging validity of the data pattern; and a data pattern transformation processing unit for reconstructing the data pattern with respect to constituent elements of each group included in the data pattern by transforming each group in accordance with a specified conversion rule for converting the constituent elements, which are conceptually similar to each other, into the same constituent element, and storing it in the storage unit if a negative result is obtained for the validity judgment.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yasunori HASHIMOTO, Ryota MIBE, Kentaro YOSHIMURA, Hirofumi DANNO, Sadahiro ISHIKAWA, Kiyoshi YAMAGUCHI
  • Publication number: 20130317879
    Abstract: There is provided a system which analyzes data representative of operation situation of a work system and finds tacit problem hidden in work performed at the a field by a system user. Particularly, the system is to support to find the problem even if the user is not a specialist such as ethnographer. The system includes event examples in which the problems in the work at the field found from user analysis such as observation or interview are classified and expressed as events in operation data when a computer is utilized, analysis menu, analysis function and visualization unit for finding the events.
    Type: Application
    Filed: February 28, 2013
    Publication date: November 28, 2013
    Applicant: HITACHI, LTD.
    Inventors: Hiromi UKAI, Ryota MIBE, Hirofumi DANNO, Hideaki ITO, Takafumi KAWASAKI, Shigetoshi HAYASHI, Hirofumi SHINKE, Chiaki HIRAI
  • Publication number: 20130125091
    Abstract: A device and method automatically generate a program for buffering differences based on characteristics of a component. A buffer program for buffering differences of the way to use a component during different software environments is automatically generated. The device includes a controller for executing automatic generation of the buffer program, a memory including control information and a processing program, an input device for inputting the processing content of the component, and an output device for outputting the automatically generated buffer program. The memory records a plurality of forms for buffering the component as the control information and the controller extracts characteristic information based on the processing content of the component and records the extracted characteristic information as control information in the memory, selects a specified form based on the characteristic information, and generates the buffer program based on the selected form and the characteristic information.
    Type: Application
    Filed: September 7, 2012
    Publication date: May 16, 2013
    Applicant: HITACHI, LTD.
    Inventors: Yasunori Hashimoto, Ryota Mibe, Shuhei Nojiri, Sadahiro Ishikawa, Kiyoshi Yamaguchi, Kentaro Yoshimura
  • Patent number: 8355806
    Abstract: An information control system capable of precisely defining and executing a condition for stipulating a state of an apparatus to be controlled. A storage unit stores an object definition table storing data items of a structure and a state of an object constituting a controlled system, and an actor definition table storing a monitor condition of an object state, an object monitor item and a setting value, as an actor as a control element for monitoring and controlling the object. A processing unit receives an object state from the controlled system, and when the state changes, transmits changed state value to the actor. The actor then refers to the actor definition table to judge whether the monitor condition is satisfied, and if satisfied, changes the setting value of the monitor condition and transmits a control command for setting value change to the object corresponding to the monitor item.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: January 15, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Toshihiko Nakano, Satoshi Ohkubo, Ryota Mibe