The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 2022
Filed:
Jun. 21, 2019
Hitachi, Ltd., Tokyo, JP;
Kei Imazawa, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
A causal inference model construction method is performed using a computer. The computer includes a control unit and a storage unit, and the control unit implements: a result value reception step of reading manufacturing log data acquired in a manufacturing process and an inspection process; a correlation model construction step of constructing a correlation model using the manufacturing log data; a physical model reception step of receiving an input of a physical model; a probability distribution computation step of calculating probability distributions of the correlation model and the physical model; a probability distribution convergence processing step of performing convergence computation on the probability distribution of the correlation model, approximating a result of the convergence computation to the probability distribution of the physical model, and overwriting the correlation model; and a causal inference model holding step of storing a correlation model as a causal inference model in the storage unit.