Interactive Decision Tree Builder

Grow a tree node-by-node. Click a leaf node to split it.

Overall Accuracy
0.0%
ℹ️

Gini Impurity

Gini = 1 - (p₀² + p₁²)
  • Lower is Better (Goal: 0.0)
  • 0.0 = Pure (Green Node ✅)
  • 0.5 = Perfectly Mixed (Bad ❌)

1. Select Node

Node: Root

2. Configure Split

0.00

Preview Weighted Gini

Lower is better 0.450

Tree Structure