| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Research Abstract |
This project has progressed both on an empirical basis and on a theory. One empirical contribution is an anonymized data set of the Japanese Labor Force Survey, which will be used to test the risk and utility of anonymization methods. Another contribution is a survey on the advanced practices and researches of anonymization. This survey has been especially conducted to provide a sound view on the current Japanese anonymization practices and researches. On a theory, the limiting conditional compound Poisson distribution has been investigated to explain the behavior of a sparse contingency table, which often arises in assessing disclosure risk. In particular, a new asymptotics based on a Bell polynomial has been proposed.
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