PRESENTATION CONTROL DEVICE, INFORMATION PRESENTATION SYSTEM, PRESENTATION CONTROL METHOD, AND STORAGE MEDIUM STORING PRESENTATION CONTROL PROGRAM

A presentation control device includes a risk calculation unit to acquire input information indicating situations where a group of object persons in a monitoring region is placed, and to calculate a risk level; a notification determination unit to determine presentation contents indicating contents of a warning, a presentation method, and the group of the object persons, based on the risk level of each of the object persons; a presentation control unit to make a presentation device determined based on the presentation method and the group present the presentation contents; and a response acquisition unit to acquire responsive action information indicating actions of the group immediately after the presentation of the presentation contents from a responsive action detector detecting actions of the object persons in the monitoring region, wherein the notification determination unit updates the presentation contents, the presentation method, the group, and presentation device, based on the responsive action information.