The Rsquare returns the square of the Pearson product moment correlation coefficient,
which consists of a dimensionless index that ranges from 1 to 1 and reflects the extent of a linear relationship between two data sets.
During a run, GeneXproTools updates continuously the Rsquare of the
evolving models and plots it in a chart in the Run
Panel.
The Pearson product moment correlation coefficient R_{i} of an individual program i is evaluated by the equation:
where P_{(ij)} is the value predicted by the individual program
i for sample case j (out of n sample cases);
and T_{j} is the target value for sample case j.
To evaluate the Rsquare of your model on the testing set, you just
have to go to the Predictions
Panel after a run.
