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Data anonymity

  • US 10,460,115 B2
  • Filed: 05/15/2017
  • Issued: 10/29/2019
  • Est. Priority Date: 05/15/2017
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a memory storing a program which, when executed on a processor, performs an operation for ensuring anonymity of data, the operation comprising;

    determining a number of members of each of a plurality of clusters, based on one or more features of members leaving the cluster; and

    anonymizing the data in the database, easing the determined number of members of each cluster, wherein the one or more features of the leaving members from the cluster are selected from the group consisting of a ratio of leaving, a period for leaving, a cause of leaving, or a combination thereof;

    wherein the database has the period for leaving for each member;

    wherein the determination is made by calculating a required minimum number, N, for the members in each cluster, based on the ratio of leaving;

    wherein the anonymization is performed using k-anonymization with k being the retired minimum number, N, and wherein, in the database, assuming that the value, k, for the k-anonymization is Y after a passage of a first predefined term, X, the required minimum number, N, is calculated based on Y.

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