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Google COVID-19 Search Trends Symptoms Dataset: Anonymization Process Description (version 1.0)

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arxiv 2009.01265 v1 pith:W23BLZAI submitted 2020-09-02 cs.CR

classification cs.CR
keywords anonymizationdatasetprocesssearchsymptomstrendscovid-19google
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abstract

This report describes the aggregation and anonymization process applied to the initial version of COVID-19 Search Trends symptoms dataset (published at https://goo.gle/covid19symptomdataset on September 2, 2020), a publicly available dataset that shows aggregated, anonymized trends in Google searches for symptoms (and some related topics). The anonymization process is designed to protect the daily symptom search activity of every user with $\varepsilon$-differential privacy for $\varepsilon$ = 1.68.

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