ANONYMIZED DATA GENERATION METHOD AND APPARATUS

摘要

A method for generating anonymized data includes: (A) extracting, from plural data blocks, each of which includes a secret attribute value and a numeric attribute value, plural groups of data blocks, wherein each of the plural groups includes data blocks that include a first data block, which has not been grouped, whose frequency distribution of the secret attribute value satisfies a predetermined condition and whose numeric attribute values are within a certain area that has a predetermined size; and (B) replacing the numeric attribute values of the data blocks that belong to each group of the plural groups with a numeric attribute value calculated for the group. And, the certain area is determined without any relation with other certain areas for other groups.

主权项

1. An anonymized data generation method, comprising:
extracting, by a computer and from a plurality of data blocks, each of which includes a secret attribute value and a numeric attribute value, plural groups of data blocks, wherein each of the plural groups includes data blocks that include a first data block, which has not been grouped, whose frequency distribution of the secret attribute value satisfies a predetermined condition and whose numeric attribute values are within a certain area that has a predetermined size; and replacing, by the computer, the numeric attribute values of the data blocks that belong to each group of the plural groups with a numeric attribute value calculated for the group, and wherein the certain area is determined without any relation with other certain areas for other groups.