公开(公告)号：US20240184284A1

公开(公告)日：2024-06-06

申请号：US18549811

申请日：2022-03-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiko NAKAGAWA ,  Yukinori SASAKI ,  Koji MIURA ,  Hironori OHIGASHI

IPC: G05B23/02

CPC classification number: G05B23/0283

Abstract: An information processing device includes: a quality evaluator that evaluates the quality of a plurality of instances of first data to generate a first evaluation result and evaluates the quality of a plurality of instances of second data to generate a second evaluation result; a learner that performs machine learning, using the plurality of instances of first data, to generate a machine learning model for detecting an anomaly; a detector that compares the first evaluation result and the second evaluation result and detects a concept drift, based on a comparison result; and an anomaly estimator that applies the machine learning model to the plurality of instances of second data to estimate whether an anomaly is present in the plurality of instances of second data.

公开(公告)号：US20230384759A1

公开(公告)日：2023-11-30

申请号：US18249467

申请日：2021-10-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hironori OHIGASHI ,  Akira MINEGISHI ,  Yuta SHIMAZAKI ,  Yukinori SASAKI

IPC: G05B19/4065

CPC classification number: G05B19/4065 ,  G05B2219/40335

Abstract: An information processing method includes: calculating a probability density distribution of a work time that is at least part of a setup time, based on production performance data read from storage, the setup time being time taken for a setup work that is performed between lots; determining whether the work time is anormal, based on the probability density distribution; and outputting a result of the determining.