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. 2015 Jan 5;112(3):679–684. doi: 10.1073/pnas.1408907112

Fig. 3.

Fig. 3.

Lorenz curves for the distribution of users’ total classification counts in each project. The Lorenz curve indicates the cumulative share of classifications (y axis) made by a particular cumulative share of users (x axis). The stronger the curvature of the Lorenz curves, the stronger the inequality in contributions. For comparison, we also show the 45° line, which corresponds to total equality, i.e., all users contribute the same amount.