| 摘要 |
<P>PROBLEM TO BE SOLVED: To efficiently generate a database through the use of questionnaire. <P>SOLUTION: A central unit 2 downloads data in response to the requests of respective portable telephone sets 10-12 and transmits the questionnaire for asking the behavior contents of a user when downloading is finished. The respective portable telephone sets 10-12 transmits an answer for the questionnaire to the central unit 2 by attaching a user ID and data of a detected position to the answer. The central unit 2 stores an answer reception time and the received answer as a set, so as to generate the database including the user ID, a position, the reception time and the items of the behavior contents. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
