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WebApr 4, 2024 · This is what we expect, the reduction in entropy (impurity of heterogeneity) by the introduction of variables. The total reduction is 1–0.874 = 0.126. This number (0.126) is called information gain and is a very important parameter in decision tree model development. This is how the degree of impurity is calculated through entropy calculation. WebJan 1, 2024 · Abstract. Phytoremediation is a proven technology for many organic and inorganic pollutants. Practical reasons have led trees to be neglected in laboratory studies in favour of herbaceous model species. However, trees are gaining momentum over herbaceous plants in field trials because of their greater effectiveness. speech codes asha
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