Before revision:  Despite sampling rates having clear temporal variations, we find that the Bernoulli process with a uniform rate well approximates Twitter data sampling, and it allows to estimate the ground-truth entity frequency and ranking with the observed sample data.
After revision:  Despite sampling rates having clear temporal variations, we find that the Bernoulli process with a uniform rate approximates the empirical distributions well. It also allows us to estimate the ground-truth entity frequency and ranking with the observed sample data.