Search DAC and Acompany by narrowing down conditions, succeeded in demonstration experiments for privacy protection data analysis using secret calculations

　Digital Advertising Consortium Co., Ltd. (hereinafter referred to as DAC) and Acompany conducted a demonstration experiment on privacy protection data analysis using "secret calculations" (technology that can calculate data with encrypted data) in the digital marketing area.

　As a result, it was possible to perform integrated analysis while keeping personal data secrets, which is useful for privacy protection.At the same time, the result was that the accuracy and speed of data analysis were at the practical level.

　In the future, the two companies will work to establish marketing data analysis methods using secret calculations.

　The details of the demonstration experiment are as follows.

　For data held by DAC customer companies and marketing data of DAC's DMP "Audienteone", "Data analysis is possible" in a state of encrypted with Acompany's secret calculation software "QuickMPC", and "Conventional"Whether it is valid compared to the analysis results of the method. "In addition, we verified whether the data analysis result in the encrypted state is at the practical level.

検証方法

1. クラウドサーバーに秘密計算環境を構築。
2. 分析対象のデータセットを、次の通り準備。
3. 秘密計算環境下で、コンバージョン値と属性・アンケート結果の相関値を計算。対照実験として、通常のローデータによる計算と比較。

検証結果

　・ It was confirmed that marketing analysis is possible in the encrypted state.

　・ It was confirmed that the time required for processing from data encryption to analysis completion is a few minutes.

　・ The average absolute error in this demonstration experiment is as shown in the table below..It was less than 001 and proved to be useful at the practical level (in general, the absolute error is 0 as the nature of the correlation coefficient..If it is less than 001, there is no practical problem).

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