Information processing device, method, and medium

A method executed by a computer, the method comprising:

• obtaining a first causality score indicating an effect that a predetermined operation has on a user, by inputting an attribute of the user to a first model;
• obtaining a second causality score indicating the effect, by inputting the attribute of the user to a second model;
• deciding a calibration function for calibration of the first causality score, based on the first causality score and the second causality score calculated for each of a plurality of users;
• and
• deciding a third causality score indicating the effect on an object user, by applying the first causality score, which is calculated with regard to the object user, to the calibration function.

A non-transitory computer-readable recording medium having recorded thereon a program, causing a computer to execute:

• obtaining a first causality score indicating an effect that a predetermined operation has on a user, by inputting an attribute of the user to a first model;
• obtaining a second causality score indicating the effect, by inputting the attribute of the user to a second model;
• deciding a calibration function for calibration of the first causality score, based on the first causality score and the second causality score calculated for each of a plurality of users;
• and
• deciding a third causality score indicating the effect on an object user, by applying the first causality score, which is calculated with regard to the object user, to the calibration function.