Relationships among Seepage, Water Level, and Rainfall of a Fill Dam by Decision Tree Analysis

Table 3

Splitting rules for decision trees.

Categories	Splitting rules	Splitting conditions
Discrete distribution	value for	Under the condition that value is minimized
	Gini index	Under the conditions that most reduce the Gini index
	Entropy index	Under conditions that reduce the most entropy index
Continuous distribution	value for	Under conditions where value is minimized
	Decrements of variance	Under conditions that maximize the amount of variance reduction