| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve user-friendliness relating to message opening without increasing a calculation cost. <P>SOLUTION: A message profile including a timestamp, an individual disclosure degree processing flag, a transmission source, a transmission time, a destination list, and a message is registered with a message storage unit 24 (S103), a message which is not given an individual disclosure degree and has been registered with the message storage unit 24 over a period T is selected (S104 and S105), the number of destinations of messages the transmission sources of which are identical to the transmission source of the selected message and the transmission times of which are within a range of (the transmission time of the selected message)±(the period T) is obtained to calculate an individual disclosure degree which is increased as the obtained number of destinations is smaller (S106), and the calculated individual disclosure degree is given to the message (S107). <P>COPYRIGHT: (C)2013,JPO&INPIT |
