| 摘要 |
<p>Movement histories of a vehicle (C) are registered appropriately in a database (200). A point specification unit (120) specifies a geographical base of a user as a point serving as a nucleus of behavior of the user. When the need arises to delete a movement history stored in the database (200), a deletion subject data determination unit (320) specifies a movement history having a low degree of relatedness to the geographical base of the user. A data deletion unit (330) then deletes the movement history specified by the deletion subject data determination unit (320) from the database (200). As a result, behavior histories having a high utility value to the user are held preferentially in the database (200).</p> |
