Behavior history management system, and behavior history management method

A behavior history management system comprising:

• a database in which behavior histories of a user are stored;
• a point specification unit that specifies a point serving as a nucleus of behavior of the user;
• and
• a data management unit that specifies a behavior history having a low degree of relatedness to the point specified by the point specification unit, and when data are to be deleted from the database, deletes the specified behavior history preferentially, wherein
• the point specification unit learns information relating to departure and arrival points including departure points from which the user departs and arrival points at which the user arrives after departing from the departure points, and estimates that a departure point having a relatively wide distribution of arrival points emanating therefrom, from among the learned departure and arrival points, is the point serving as the nucleus of the behavior of the user.

A behavior history management method comprising:

• storing behavior histories of a user in a database;
• specifying a point serving as a nucleus of behavior of the user;
• and
• specifying a behavior history having a low degree of relatedness to the specified point, and when data are to be deleted from the database, deleting the specified behavior history preferentially.