Privacy protection method for contingency table data dissemination
A technology for data publishing and privacy protection, applied in digital data protection, electronic digital data processing, special data processing applications, etc., can solve problems such as low flexibility, low accuracy, and inability to guarantee data consistency, and achieve flexibility The effect of high, high precision and usability
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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0032] figure 1 Shown is the overall flow chart of the privacy protection method for publishing contingency table data of the present invention, including the following steps:
[0033] Step 1: Input the contingency table T (m rows×n columns) and parameter ε (indicating user-defined security parameters, ε≥0), and determine the replacement base of each group T(a,i) of the contingency table T Φ(a...
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