摘要
数据转换是保护数据隐私的一种有效方法。针对如何保持转换后数据的可用性问题,提出了一种基于模糊集的隐私保护方法。该方法把隐私属性值转换成模糊值,然后把转换后的数据及其模糊偏移度一起公开,既保护了数据隐私,也标示了数据的相对大小,很好地保持了数据的可用性。实验采用k-平均聚类方法对转换前后的数据进行聚类分析对比,结果表明,转换前后数据的聚类结果有很高的相似性,满足保护隐私和保持可用性的要求。
Data transformation is an important approach to data privacy preserving.This paper concentrates on the issue of maintaining the usability of data after transformation and proposes a method based on fuzzy sets.The method transforms sensitive attribute values into fuzzy values and publicizes the data with fuzzy offset degree.This helps the end user to tell the different between two attribute values,even though they are mapped to the same linguistic term.The experimental analysis is designed by adopting clustering algorithm k-means on primitive datasets and perturbed ones by fuzzy sets.It demonstrates that the method efficiently preserves privacy information and maintains the clustering model of primitive data well.
出处
《计算机工程与应用》
CSCD
北大核心
2010年第28期118-121,共4页
Computer Engineering and Applications
基金
国家自然科学基金No.60773198
No.60703111
广东省自然科学基金No.06104916
No.8151027501000021
广东省科技计划项目No.2008B050100040
国家教育部新世纪优秀人才支持计划No.NCET-06-0727~~
关键词
模糊集
隐私保护
隶属度
模糊偏移度
fuzzy sets
privacy preserving
membership degree
fuzzy offset degree