计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
2期
75-80
,共6页
刘丽杰%李盼池%李守威
劉麗傑%李盼池%李守威
류려걸%리반지%리수위
隐私保护%个性化隐私匿名%粒计算%粒化(α,k)-匿名模型
隱私保護%箇性化隱私匿名%粒計算%粒化(α,k)-匿名模型
은사보호%개성화은사닉명%립계산%립화(α,k)-닉명모형
privacy preservation%personalized privacy anonymous%granular computing%granulating(α,k)-anonymous model
针对现有个性化隐私匿名技术不能同时满足面向个体需求的个性化和面向敏感属性值的个性化两方面的要求,引入了粒计算思想。建立隐私保护决策度集合,以刻画不同个体对敏感属性同一敏感值的不同保护要求;基于决策度集合的不同取值建立顶层粒度空间;对每个顶层粒度空间中敏感值赋予不同的出现频率约束,以满足面向敏感值的个性化匿名需求。算法分析及仿真实验结果表明,粒化(α,k)-匿名模型和算法以较小的信息损失和执行时间获得更综合、更合理的个性化隐私保护的实现。
針對現有箇性化隱私匿名技術不能同時滿足麵嚮箇體需求的箇性化和麵嚮敏感屬性值的箇性化兩方麵的要求,引入瞭粒計算思想。建立隱私保護決策度集閤,以刻畫不同箇體對敏感屬性同一敏感值的不同保護要求;基于決策度集閤的不同取值建立頂層粒度空間;對每箇頂層粒度空間中敏感值賦予不同的齣現頻率約束,以滿足麵嚮敏感值的箇性化匿名需求。算法分析及倣真實驗結果錶明,粒化(α,k)-匿名模型和算法以較小的信息損失和執行時間穫得更綜閤、更閤理的箇性化隱私保護的實現。
침대현유개성화은사닉명기술불능동시만족면향개체수구적개성화화면향민감속성치적개성화량방면적요구,인입료립계산사상。건립은사보호결책도집합,이각화불동개체대민감속성동일민감치적불동보호요구;기우결책도집합적불동취치건립정층립도공간;대매개정층립도공간중민감치부여불동적출현빈솔약속,이만족면향민감치적개성화닉명수구。산법분석급방진실험결과표명,립화(α,k)-닉명모형화산법이교소적신식손실화집행시간획득경종합、경합리적개성화은사보호적실현。
As for that existing personalized privacy anonymous technology can not meet the need for both individual need-oriented personalization and sensitive property-oriented personalization, the granular computing thinking is used. It establishes a privacy protection decision-making degree set to depict different individual requirements of different protec-tion to the same sensitive value of sensitive properties, establishes top-level granularity space based on different values of decision-making degree collection, gives different frequency constraints for sensitive values in each top-level granularity space, to meet the personalized anonymous request of sensitive-oriented value. Algorithm analysis and simulation results show that granulating(α, k)-anonymous model and algorithm obtain more comprehensive and more reasonable personal privacy implementation of smaller loss of information and executing time.