- [[Gini coefficients]] # Idea If there are 4 outcomes, $P_a$, $P_b$, $P_c$, $P_d$ $\frac{1}{\sum P_i^2}$ Used to measure [[tipping point models|tipping points]] (see also [[conceptual definitions of entropy]], which is also used to measure tipping points). ![[Pasted image 20210519110029.png]] ![[Pasted image 20210519110100.png]] # References - https://www.coursera.org/learn/model-thinking/lecture/IQW8i/measuring-tips