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.

###### Drag & drop to use

Drag & drop this node **right into the Workflow Editor**
of KNIME Analytics Platform (4.x or higher).