Applying Calculus of Variatious to Seek for the Best Impurity Function of Decision Tree
Shen Yongjun, Zhao Shu-lan, Wang Guanghui, Guo Na, XU Hua-long · 2010
This study reveals the essence of the impurity function, and the constraints of constructing impurity function is presented. Strategy discussed in this paper makes the method of choosing impurity function become an simple, precise comparison operation from qualitative artificial analysis.