CONTROL DEVICE, CONTROL SYSTEM, CONTROL METHOD, AND COMPUTER READABLE MEDIUM STORING CONTROL PROGRAM

A control device capable of more appropriately learning a control detail of a control target in accordance with a state of the control target is provided. A control device according to the present disclosure includes a state data acquisition unit to acquire state data indicating a state of a control target, a state category identification unit to identify a state category to which a state indicated by the state data belongs among a plurality of state categories indicating classifications of states of the control target on the basis of the state data, a reward generation unit to calculate a reward value of a control detail for the control target on the basis of the state category and the state data, and a control learning unit to learn the control detail on the basis of the state data and the reward value.