SYSTEM FOR DETERMINING ORDINARINESS/UNUSUALNESS OF POSTING POSITION

摘要

In the present invention, an acquisition means acquires information pertaining to the places of residence of one or more second users having a second social media account associated with a first user having a first social media account. An estimation means estimates the place of residence of the first user from information pertaining to the places of residence of the second users. A detection means detects a posting location where the first user has posted to social media. A comparison means compares the detected positing location and the estimated place of residence of the first user. A determination means determines, on the basis of the result of comparison, whether the posting location is an ordinary location of activity or an unusual location of activity for the first user.