Fig. 4: Regimes for the number of unique records.
From: A scaling law to model the effectiveness of identification techniques

We report the expected number of population unique records \({\mathbb{E}}[n\cdot \Xi \,| \,h,\gamma ]\) for γ = − 1 (finite uniform distribution of anonymity sets; green square), γ = 0 (geometric tail; purple circle), and γ = 1 (heavy tail; orange cross), for a fixed entropy h = 10bits and a population ranging from n = 1 to 8B.