发明授权
- 专利标题： Preserving privacy of one-dimensional data streams by perturbing data with noise and using dynamic autocorrelation
- 专利标题（中）： 通过噪声干扰数据并使用动态自相关来保护一维数据流的隐私
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申请号： US11678808申请日： 2007-02-26
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公开(公告)号： US07840516B2公开(公告)日： 2010-11-23
- 发明人: Yuan-Chi Chang , Feifei Li , Spyridon Papadimitriou , George A. Mihaila , Ioana Stanoi , Jimeng Sun , Philip S. Yu
- 申请人： Yuan-Chi Chang , Feifei Li , Spyridon Papadimitriou , George A. Mihaila , Ioana Stanoi , Jimeng Sun , Philip S. Yu
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理机构： Fleit Gibbons Gutman Bongini & Bianco PL
- 代理商 Jon A. Gibbons
- 主分类号： G06F17/00
- IPC分类号： G06F17/00
摘要：
A method, information processing system, and computer readable medium are provided for preserving privacy of one-dimensional nonstationary data streams. The method includes receiving a one-dimensional nonstationary data stream. A set of first-moment statistical values are calculated, for a given instant of sub-space of time, for the data. The first moment statistical values include a principal component for the sub-space of time. The data is perturbed with noise along the principal component in proportion to the first-moment of statistical values so that at least part of a set of second-moment statistical values for the data is perturbed by the noise only within a predetermined variance.
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