ABSTRACT VISUALIZATION DEVICE, ABSTRACT VISUALIZATION METHOD AND ABSTRACT VISUALIZATION PROGRAM

PROBLEM TO BE SOLVED: To provide an abstract visualization device, an abstract visualization method and an abstract visualization program that can intuitively grasp transition of a past browsing activity.SOLUTION: An abstract visualization device is configured to: acquire a browsing history of a browsing page browsed by a user with a user terminal; calculate similarity among browsing pages as to a plurality of browsing pages on the basis of the acquired browsing history; classify the plurality of browsing pages into a plurality of groups on the basis of the calculated similarity; calculate a value indicative of proximity of a content among the classified groups on the basis of a browsing page belonging to each of the classified groups; determine an arrangement of each group on a first dimension in accordance with the proximity of the content among the groups on the basis of the calculated value; and generate, as summary information of the browsing history, a display image made by arranging a contraction image of the browsing page or a graphic image corresponding to the browsing page, belonging to the group for each of the classified groups, while plotting a coordinate with a determined arrangement of each group on the first dimension represented on a vertical axis and a browsing date/time for each browsing page on a horizontal axis as an arrangement coordinate of the browsing page.