R² regression score (R2)

Computes the R² regression score. Best possible score is 1.0 and it can be negative (because the model can be arbitrarily bad). A constant model that always predicts the expected value of y, disregarding the input features, would get a R² score of 0.0)

Definition

Input ports

Y-prob table

Y-prob

Y-true table

Y-true

Output ports

r2 score table

r2 score

Implementation

class node_metrics.R2Score