计算机科学 ›› 2013, Vol. 40 ›› Issue (10): 92-97.
陈玉凤,刘学军,李斌
CHEN Yu-feng,LIU Xue-jun and LI Bin
摘要: 位置隐私保护正在受到越来越多人的关注与研究,目前基于用户相互合作的无中心服务器的位置隐私保护成为当前研究的重点。为了在不可信环境下更好地保护用户位置隐私,从技术上提出了一种基于博弈分析思想的用户协作的位置隐私保护方法Privacy_l,此方法通过用户协作形成匿名组,以匿名组的密度中心作为锚点代替真实位置发起查询;通过安全求和来计算锚点,解决在现实不可信环境下不诚信合作的问题;同时根据用户的不同位置隐私需求,通过设置不同的隐私保护参数水平,达到不同的匿名保护效果,并且采用改进的增量查询方法提高近邻查询效率。仿真实验表明,此方法具有较好的性能,能够更好应用于现实环境。
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