ESTIMATION APPARATUS, ESTIMATION METHOD, AND ESTIMATION PROGRAM

• Main Authors: TAKAMI GO, OKAMOTO HIROMI, SATO MASAHIKO, FUJII HIDEYUKI, MITOMO NOBUHIRO, JINGU YOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 09.01.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; COUNTING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING

SOLUTION: There is provided an estimation apparatus including an abnormality index acquisition unit configured to acquire, as an abnormality index, an evaluation index which is output by an evaluation model according to state data being input when an abnormality occurs in a facility, among pieces of the state data indicating a state of the facility when an operation model is used to control a control target provided in the facility, the operation model being generated by reinforcement learning in which an output of the evaluation model trained by machine learning to output the evaluation index in accordance with the state of the facility, is set as at least a part of a reward, and outputting an action in accordance with the state of the facility; an estimation unit configured to estimate which of the evaluation model or the operation model is a main cause of the abnormality, based on the abnormality index; and an output unit configured to execute an output in accordance with a result of the estimate.SELECTED DRAWING: Figure 4 【解決手段】設備の状態に応じた評価指標を出力するように機械学習された評価モデルの出力を報酬の少なくとも一部とした強化学習により生成され、前記設備の状態に応じた行動を出力する操業モデルを用いて前記設備に設けられた制御対象を制御した場合における前記設備の状態を示す状態データのうち、前記設備に異常が発生した場合における前記状態データを入力したことに応じて前記評価モデルが出力する前記評価指標を、異常指標として取得する異常指標取得部と、前記異常指標に基づいて、前記異常の主要因が前記評価モデルまたは前記操業モデルのいずれであるかを推定する推定部と、前記推定された結果に応じた出力を実行する出力部と、を備える、推定装置を提供する。【選択図】図４