Numeric Scorer
This node computes certain statistics between the a numeric column's
values (ri) and predicted (pi) values. It
computes
R²=1-SSres/SStot=1-Σ(pi-ri)²/Σ(ri-1/n*Σri)² (can be negative!),
mean absolute error (1/n*Σ|pi-ri|),
mean squared error (1/n*Σ(pi-ri)²),
root mean squared error (sqrt(1/n*Σ(pi-ri)²)), and
mean signed difference (1/n*Σ(pi-ri)).
The computed values can be inspected in the node's view and/or further
processed using the output table.
Dialog Options
- Reference column
- Column with the correct, observed, training data values.
- Predicted column
- Column with the modeled, predicted data values.
- Change column name
- Change the default output column name.
- Output column name
- The name of the column in the output.
Ports
Input Ports
0 |
Table with predicted and reference numerical data |
Output Ports
0 |
The computed statistical measures:
|
Views
- Statistics
- A table with the statistical measures
This node is contained in KNIME Base Nodes
provided by KNIME GmbH, Konstanz, Germany.