Simulated system, simulation method and simulated for the program

Accepting means 81, and past estimator measured data were learned using up to a point in time, the verification data is measured data of a time since that was defined based update necessity of estimator metric accept and update rules. Simulating means 82, an estimation result that is calculated by applying a time series validation data of a predetermined period to the estimator, based on the update rules, update of the estimator metric and estimator in the predetermined time period simulating at least one of the results.