Design of User Information Disclosure Decision Method for Disaster Information Sharing System

Keita Kayaba, Akiko Takahashi


During natural disasters, a significant amount of information is shared over the Internet. Therefore, it is desirable to provide disaster information based on information about individual users. However, there is a trade-off between the protection of user information and the quality of services that should be considered when providing disaster information. We propose a method that rationally determines the extent of user information to be disclosed. The effectiveness of the proposed method was evaluated experimentally. The experiments were conducted using the proposed method and a simple determination method wherein both the utility and intention of the user were considered relative to the extent of user information disclosure. In addition, the extent to which the trade-off was considered for each user was evaluated quantitatively.


trade-off; user information; disaster information

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