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. 2024 Nov 6;10(45):eadn2654. doi: 10.1126/sciadv.adn2654

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Fig. 1. — (A) The bold curve represents the standard logistic function f(s) = 1/(1 + e^−s) used in the Bradley-Terry model. The remaining curves show the function f_α of Eq. 8 for increasing values of the luck parameter α. (B) The score function f_β of Eq. 9 for different values of the depth of competition β, both greater than 1 (steeper) and less than 1 (shallower).