公开(公告)号：US20230044694A1

公开(公告)日：2023-02-09

申请号：US17690300

申请日：2022-03-09

Applicant: Hitachi, Ltd.

Inventor： Masakazu TAKAHASHI ,  Masashi EGI ,  Yuxin LIANG

IPC: G06Q10/06

Abstract: To provide an action evaluation system capable of more efficiently planning a new action based on an execution result of a test for limited action conditions. A condition change tracking unit determines, based on execution result information obtained by executing a test related to an action for an action target having a predetermined action condition, a condition change which is a change in the action condition before and after the test. A result verification unit calculates, based on the execution result information, an evaluation value obtained by evaluating an effect of the action. A reward distribution unit calculates a change contribution degree which is a degree of contribution of the condition change to the evaluation value.

公开(公告)号：US20230410488A1

公开(公告)日：2023-12-21

申请号：US18036212

申请日：2021-11-22

Applicant: Hitachi, Ltd.

Inventor： Masaki HAMAMOTO ,  Masashi EGI ,  Masakazu TAKAHASHI ,  Hiroyuki NAMBA

IPC: G06V10/80 ,  G06V10/778

CPC classification number: G06V10/80 ,  G06V10/7788

Abstract: A predictor creation device including a processor configured to execute a program and a storage device that stores the program acquires a calibration target ensemble predictor obtained by combining a plurality of predictors based on a training data set which is a combination of training data and ground truth data, calculates a prediction basis characteristic related to a feature of the training data for each of the plurality of predictors, acquires an expected prediction basis characteristic related to the feature based on the prediction basis characteristic related to the feature as a result of outputting the prediction basis characteristic related to the calculated feature, determines a combination coefficient of each of the plurality of predictors based on the prediction basis characteristic related to the feature and the expected prediction basis characteristic related to the feature, and calibrates the calibration target ensemble predictor based on the combination coefficient.

公开(公告)号：US20220230119A1

公开(公告)日：2022-07-21

申请号：US17468797

申请日：2021-09-08

Applicant: Hitachi, Ltd.

Inventor： Yuxin LIANG ,  Masashi EGI ,  Yusuke FUNAYA ,  Masakazu TAKAHASHI

IPC: G06Q10/06 ,  G06F3/0482

Abstract: A computer has: a testing unit obtaining attribute values of attributes from an object to which a measure is implemented and an object to which the measure is not implemented, and calculating a change amount of the attribute values of the attributes due to the implementation of the measure and a test indicator for determining a significant difference of the change amount of the attribute values of the attributes due to the implementation of the measure; an experimental rule updating unit calculating a cumulative change amount indicating a temporal change amount of the attribute values of the attributes and a cumulative test indicator indicating a temporal test indicator of the attributes on the basis of a test result output from the testing unit, and accumulating data in which the identification information of the measure and the cumulative change amount and the cumulative test indicator are associated; and a display unit.

公开(公告)号：US20220066429A1

公开(公告)日：2022-03-03

申请号：US17179009

申请日：2021-02-18

Applicant: HITACHI, LTD.

Inventor： Masakazu TAKAHASHI ,  Takuro YASUI ,  Keiro MURO

IPC: G05B19/418 ,  G06F16/2455

Abstract: A manufacturing condition setting automating apparatus includes: a quality judging unit that computes a present process quality from facility data at predetermined time intervals, and judges whether or not it is in a quality tolerance range; a manufacturing condition candidate creating unit that computes a feature quantity, searches a database for condition change cases having similar feature quantities, tabulates condition change cases basis on whether the condition change cases are successes or failures, and outputs manufacturing condition candidates in descending order of rates of successes; an imbalance-preventing manufacturing condition candidate creating unit that changes scores that decide ranks of manufacturing condition candidates, and creates a ranking of manufacturing condition candidates; and a manufacturing condition output unit that outputs a set value of a condition change of a top manufacturing condition candidate to the manufacturing facility, and registers a new condition change in the condition change history.

公开(公告)号：US20210182167A1

公开(公告)日：2021-06-17

申请号：US17002965

申请日：2020-08-26

Applicant: Hitachi, Ltd.

Inventor： Yoichi KAWACHIYA ,  Masakazu TAKAHASHI ,  Keiro MURO

IPC: G06F11/32 ,  G06F11/34

Abstract: A traceability estimation unit generates batch combination output data configured by a plurality of combinations of a batch in the first process and a batch in the second process, and the feature of the batch. The traceability estimation unit estimates the combination of the batch in the first process and the batch in the second process, which is used as traceability, from the plurality of the combinations of the batches in the batch combination output data by using the feature.

公开(公告)号：US20220156602A1

公开(公告)日：2022-05-19

申请号：US17477314

申请日：2021-09-16

Applicant: Hitachi, Ltd.

Inventor： Hiroyuki NAMBA ,  Masashi EGI ,  Masaki HAMAMOTO ,  Masakazu TAKAHASHI

IPC: G06N5/02

Abstract: In classification problems or regression problems, a prediction rule that is highly accurate, simple, and in match with the knowledge of experts is obtained. A system includes a prediction rule simplification unit that simplifies a prediction rule of a learning model using an evaluation metric and a restriction; a branch condition search unit that updates a part of the simplified branch condition for prediction rule based on calibration information expressing a request for a prediction value or a specific branch condition; and a threshold optimization unit that updates a part of a threshold of the simplified prediction rule based on the calibration information.