Predictive model creation device, predictive model creation method and predictive model creation program

摘要

PROBLEM TO BE SOLVED: To locally learn parameters of a prediction model by designating a period in which prediction accuracy is desired to be improved and a range of measured values that cannot be ignored. SOLUTION: The predictive model creating apparatus of the present invention acquires an actually measured value of a value indicating the property of raw water acquired by a water purification plant and an actually measured value of a value indicating the amount of a drug injected into the raw water. The parameter optimization section, which optimizes the parameters of the prediction model using the value indicating the properties of the raw water as the explanatory variable and the value indicating the amount of the drug as the objective variable, and the parameter are optimized. The period during which the difference between the predicted value indicating the amount of the drug output by the prediction model and the measured value indicating the amount of the drug becomes significantly large, and / or the range of the measured value excluding the outliers. It is characterized by including a receiving period / range receiving unit and a parameter correction unit that corrects parameters by using the actually measured values corresponding to the accepted period and / or range. [Selection diagram] FIG. 11