INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM

An embodiment provides a state estimation device including: an acquisition unit configured to acquire a state variable including an observation value obtained by observing a steersman who steers an moving object; and an estimation unit including a state model having a correlation between the state variable and a cognitive load during steering of the steersman and configured to estimate a state of the steersman from the state variable acquired by the acquisition unit.