长短期记忆网络的轨迹隐私保护

doi:10.3969/j.issn.0255-8297.2019.06.008

应用科学学报 ›› 2019, Vol. 37 ›› Issue (6): 835-843.doi: 10.3969/j.issn.0255-8297.2019.06.008

长短期记忆网络的轨迹隐私保护

严少均, 王子驰, 张新鹏

上海大学通信与信息工程学院, 上海 200444

收稿日期:2018-12-19 修回日期:2019-03-13 出版日期:2019-11-30 发布日期:2019-12-06
通信作者: 张新鹏,教授,博导,研究方向:信息隐藏、图像处理、数字认证,E-mail:xzhang@shu.edu.cn E-mail:xzhang@shu.edu.cn
基金资助:
国家自然科学基金（No.U1636206，No.61525203，No.61502009）；上海市曙光学者计划（No.14SG36）；上海市优秀学术带头人计划（No.16XD1401200）资助

Trajectory Privacy Protection Method Using LSTM Network

YAN Shaojun, WANG Zichi, ZHANG Xinpeng

School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China

Received:2018-12-19 Revised:2019-03-13 Online:2019-11-30 Published:2019-12-06

摘要/Abstract

摘要： 随着移动互联网的普及，位置查询已经成为用户享受服务的重要方式.然而在位置查询中，服务器可获取用户位置及轨迹信息这一特点会威胁到用户隐私.为此，提出了一种利用改进的长短期记忆网络来保护用户轨迹隐私的方法.首先可信第三方利用改进的长短期记忆网络预测用户未来时刻的位置点信息，之后第三方在构造匿名区域时，将其预测的位置点信息放入当前时刻进行请求，以打乱轨迹中的时序信息，并模糊服务器端的用户轨迹序列，从而有效保护用户轨迹隐私.同时，将未来时刻点放入当前时刻进行请求这一操作也克服了位置隐私保护中的匿名区域不合理问题，提高了系统服务的有效性.实验结果表明，该方法在用户轨迹的隐私性方面优于现有方法.

关键词: 轨迹, 隐私保护, 长短期记忆网络, 位置服务

Abstract: With the popularity of the mobile Internet, location query has become an important way for users to enjoy services. However, in the location query, the server can obtain the user location and trajectory information, which threaten the user's privacy. In order to improve the privacy of user trajectory, this paper proposes a method to protect user trajectory privacy by using improved long short-term memory (LSTM) networks. First, the trusted third party uses the improved LSTM network to predict the later position of the user. While constructing the anonymous area, the third party places the predicted location point information into the current moment to make a request. It can disrupt the timing information in the trajectory and obscure the user trajectory sequence on the server side, and therefore protects the privacy of user trajectory. Meanwhile, by placing the future moments into the current moment, the unreasonable problem of the anonymous area in the location privacy protection is overcome. Thus, the effectiveness of the system service is ensured. Experimental results show that the privacy of the user trajectory in this method is better than existing method.

Key words: trajectory, privacy protection, long short-term memory (LSTM), locationbased service

中图分类号:

TP309

严少均, 王子驰, 张新鹏. 长短期记忆网络的轨迹隐私保护[J]. 应用科学学报, 2019, 37(6): 835-843.

YAN Shaojun, WANG Zichi, ZHANG Xinpeng. Trajectory Privacy Protection Method Using LSTM Network[J]. Journal of Applied Sciences, 2019, 37(6): 835-843.

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长短期记忆网络的轨迹隐私保护

Trajectory Privacy Protection Method Using LSTM Network

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