Event Data service gathered 740 million events from 12 sources, indicating robust data collection efforts.
UPDATE August 2, 2021: This work was awarded to Laura Paglione of the Spherical Cow Group. To date, we have collected around 740 million events from 12 different source since we launched our Event Data service service in 2017.
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Martyn Rittman (2021) studied this question.
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