Government policies and regulations that promote waste reduction and investment in waste management infrastructure are also critical in achieving sustainable waste management practices. By working together, we can achieve a cleaner environment for the present and future generations.
With pk=n_k/n being the fraction of the n_k samples from class k = {0,1} out of the total of n samples at node τ, the Gini impurity i(τ) is calculated as 1-p_0^2-p_1^2. The more discriminativ or clean a node is the lower is the value. A split will happen, if the decrease (delta_i) of the value is great for a given node. The gini decrease is the sum over all nodes in all trees of their delta_i's.
D. Weber, A. Voit, G. Kollotzek, and N. Henze. Proceedings of the 18th International Conference on Mobile and Ubiquitous Multimedia, page 24:1--24:12. New York, NY, USA, ACM, (2019)
J. Joerden, E. Hilgendorf, and F. Thiele. Joerden, Jan C.; Hilgendorf, Eric (Hrsg.): Menschenwürde in der Medizin: Quo vadis?., Nomos Verlag, Baden-Baden, (2012)