公开(公告)号：EP4404213A1

公开(公告)日：2024-07-24

申请号：EP22869759.5

申请日：2022-08-22

申请人： National University Corporation Tokyo University Of Agriculture and Technology

发明人： YAMANAKA, Akinori ,  ISHII, Akimitsu

IPC分类号： G16Z99/00

CPC分类号： G16Z99/00

摘要： An acquisition section (101) acquires an actual measurement value of a measured change in a specific environment of a data assimilation target. A computation section (102) uses a preliminary initial state and a preliminary value of an unknown parameter that are related to the data assimilation target to perform a numerical computation of a change in the specific environment of the data assimilation target. An update section (103) computes a value of an evaluation function representing errors between the actual measurement value and a value obtained from a result of the numerical computation and corresponding to the actual measurement value, finds an acquisition function from plural combinations of values of the initial state and the unknown parameter combined with the evaluation function value, and updates values of the initial state and the unknown parameter so as to minimize a value of the evaluation function based on a value of the acquisition function. Values of the initial state and the unknown parameter related to the data assimilation target are estimated by an iteration determination section (104) repeating each processing of the computation section (102) and the update section (103) until a predetermined iteration end condition is satisfied.