公开(公告)号：US20250103925A1

公开(公告)日：2025-03-27

申请号：US18977744

申请日：2024-12-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YIRAN JIANG ,  YUICHIRO SADANAGA ,  NOBUO HARA

IPC: G06N5/045 ,  G06F17/18 ,  G06N3/045

Abstract: Data analysis device (1) includes data acquisition unit (10) that acquires a plurality of explanatory variables X and E and objective variable Y that can take different values depending on a time, first model derivation unit (30) that performs multiple regression analysis by using the plurality of explanatory variables X and E and objective variable Y and derives first model M1 indicating a relationship between the plurality of explanatory variables X and E and objective variable Y, change point detection unit (50) that detects change point Tc that is a time when a predetermined explanatory variable (for example, E) among the plurality of explanatory variables X and E changes beyond a predetermined range, and second model derivation unit (60) that corrects first model M1 based on predetermined explanatory variable E starting from change point Tc and derives second model M2 that is a corrected model.