DRIVING ASSISTANCE DEVICE, DRIVING ASSISTANCE METHOD, AND STORAGE MEDIUM

Provided is a gaze estimation device for estimating toward which gaze candidate an occupant of a mobile object is directing his or her gaze from among a plurality of gaze candidates including gaze candidates existing on a structure of the mobile object and an object near the mobile object, the gaze estimation device being configured to: calculate, for each of the plurality of gaze candidates, a probability value of the occupant directing his or her gaze toward the gaze candidate based on the gaze and a probability distribution representing probabilities of directing his or her gaze toward each of the plurality of gaze candidates; and estimate that the occupant is directing his or her gaze toward a gaze candidate for which the probability value is equal to or larger than a threshold value among the plurality of gaze candidates.