Numeric Scorer

This node computes certain statistics between the a numeric column's values (r_i) and predicted (p_i) values. It computes R²=1-SS_res/SS_tot=1-Σ(p_i-r_i)²/Σ(r_i-1/n*Σr_i)² (can be negative!), Mean absolute error (1/n*Σ|p_i-r_i|), Mean squared error (1/n*Σ(p_i-r_i)²), Root mean squared error (sqrt(1/n*Σ(p_i-r_i)²)), Mean signed difference (1/n*Σ(p_i-r_i)), Mean absolute percentage error 1/n * Σ((|r_i - p_i|)/ |r_i|), The computed values can be inspected in the node's view and/or further processed using the output table.

Node details

Ports Options Views

Input ports

Type: Data
Table with predicted and reference numerical data

Output ports

Type: Data
The computed statistical measures:
- R² - coefficient of determination, 1-SS_res/SS_tot
- Mean squared error - 1/n*Σ((p_i-r_i)²)
- Mean absolute error - 1/n*Σ|p_i-r_i|
- Root mean squared error - Sqrt(1/n*Σ((p_i-r_i)²))
- Mean signed difference - 1/n*Σ(p_i - r_i)
- Mean absolute percentage error 1/n * Σ((|r_i - p_i|)/|r_i|)

Numeric Scorer

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Node details

Input ports

Output ports

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