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Google COVID-19 Vaccination Search Insights: Anonymization Process Description

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arxiv 2107.01179 v2 pith:IMCC6LGS submitted 2021-07-02 cs.CR

classification cs.CR
keywords covid-19anonymizationsearchvaccinationapplieddeltagoogleinsights
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

This report describes the aggregation and anonymization process applied to the COVID-19 Vaccination Search Insights (published at http://goo.gle/covid19vaccinationinsights), a publicly available dataset showing aggregated and anonymized trends in Google searches related to COVID-19 vaccination. The applied anonymization techniques protect every user's daily search activity related to COVID-19 vaccinations with $(\varepsilon, \delta)$-differential privacy for $\varepsilon = 2.19$ and $\delta = 10^{-5}$.

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