| 摘要 |
<p>Provided is an anonymization device for optimally and fully anonymizing history information in a state where innate properties present in a plurality of records having the same identifier are upheld to the greatest extent possible. This anonymization device is provided with: a record extracting means for extracting, from history information including a plurality of records that relate to unique identifier information associated with at least a quasi-identifier and sensitive information, a record that is able to satisfy a desired anonymity and that is given, on the basis of the smallness of the ambiguity of properties present across a plurality of records that share a specific unique identifier, a unique identifier different from said specific unique identifier; and an anonymizing means for imparting a commonality to and thereby abstracting the quasi-identifiers included in each of a plurality of records extracted by the record extracting means so that the individual attributes of the extracted records satisfy the aforementioned desired anonymity.</p> |
