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-  2018 

基于空间四分的Hilbert位置k-匿名算法设计与实现 The Design and Implement of Hilbert Location k-Anonymity Algorithm Based on Spatial Quadtree

Keywords: 位置服务,位置隐私,位置k-匿名

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Abstract:

位置服务在给人们带来便利的同时也带来了很多的位置隐私问题.位置k-匿名作为保护位置隐私的主要方法,一般通过用一块包含至少k个不可区分位置的匿名区域代替真实位置,从而保护用户的位置隐私,但是过大的匿名区域往往会影响位置服务的效果.本文提出基于空间四分的Hilbert位置k-匿名方法,该方法在首先使用间隔匿名法得到满足k-匿名要求区域的基础上,使用Hilbert方法对该匿名区域进行进一步优化.实验结果表明该方法能够得到包含对象数更接近于k值,且面积更小的匿名区域

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