位置情報とタイムスタンプの有用性を調整可能な 移動軌跡匿名化手法

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2020/08/01

タイトル(英語): A Method of Trajectory Anonymization with Adjustable Usefulness

著者名: 千葉　智樹（電気通信大学大学院情報理工学研究科），清　雄一（電気通信大学大学院情報理工学研究科），田原　康之（電気通信大学大学院情報理工学研究科），大須賀　昭彦（電気通信大学大学院情報理工学研究科）

著者名(英語): Tomoki Chiba (Graduate School of Informatics and Engineering, The University of Electro-Communications), Yuichi Sei (Graduate School of Informatics and Engineering, The University of Electro-Communications), Yasuyuki Tahara (Graduate School of Informatics and Engineering, The University of Electro-Communications), Akihiko Ohsuga (Graduate School of Informatics and Engineering, The University of Electro-Communications)

キーワード: 匿名化，有用性，プライバシ，位置情報，移動軌跡　　anonymization，utilty，privacy，location information，trajectory

要約(英語): Movement trajectories can provide useful information for all fields. However, they may have high privacy parameters, sharing trajectory data with other operators without anonymization carries the risk of linking movement trajectories to individuals. Therefore, it is necessary to consider applying privacy protection to trajectory data. Anonymization indicators, such as k-anonymity are generally adopted for anonymization of trajectory data. Some studies modify position information to achieve anonymity. This modification sometimes produces inaccuracies in data sets. Moreover, they cannot decide on which balance to change location information and timestamp. In this study, to reduce the modification distance of the position, we propose an algorithm that allows the mismatch of time when the position information is acquired within a certain range. Further, we define indicators that represent distortions of position and time information. As a result of comparing the proposed method and the existing method, the usefulness of the proposed method is shown.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.140 No.8 （2020） 特集Ⅰ：社会課題解決に向けた超スマート社会実現技術　特集Ⅱ：国際会議ICESS 2019

本誌掲載ページ: 956-963 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/140/8/140_956/_article/-char/ja/