Gear-shift control data generation method, gear-shift control device, and gear-shift control system

A gear-shift control data generation method executed by an execution device in a state where relational regulation data used for regulating a relationship between a state of a vehicle and an action variable is stored in a storage device, the action variable being a variable associated with an operation of a transmission mounted on the vehicle, the gear-shift control data generation method comprising:

• an acquisition process for acquiring the state of the vehicle based on a detection value of a sensor;
• an operation process for operating the transmission to switch a gear ratio;
• a reward calculation process for assigning, based on the state of the vehicle acquired by the acquisition process, a higher reward when a characteristic of the vehicle satisfies a criterion than when the characteristic does not satisfy the criterion;
• and
• an update process for updating the relational regulation data by inputting, to an update mapping determined in advance, the state of the vehicle acquired by the acquisition process, a value of the action variable used for the operation of the transmission, and a reward corresponding to the operation, wherein:
• the update mapping outputs the relational regulation data that is updated to increase an expected profit for the reward when the transmission is operated according to the relational regulation data;
• and
• the criterion when the reward is assigned by the reward calculation process is defined for a combination of values of a first variable and a second variable that are two from among four variables of a gear-shift time required for switching the gear ratio, a heat generation amount of the transmission during a period of switching the gear ratio, an amount in which a rotation speed of an input shaft during the period of switching the gear ratio exceeds a reference rotation speed, and an impact amount generated when switching the gear ratio.