Test All
Evaluates the performance of all the models in the History Panel on the testing set, showing their respective fitnesses and R-squares. If no testing set is used, then this button is disabled.

Test Current
Evaluates the performance of the selected model on the testing set, showing its fitness and R-square. If no testing set is used, then this button is disabled.

Refresh All
Evaluates the performance of all the models in the History Panel both on the training and testing sets, and updates all the fitnesses and R-squares. This button is particularly useful when you have changed the fitness function or the training set after a run and would want to evaluate the performance on the training set with this new fitness function or new “training set”.

Best of Run – Training
This heading is used to identify the best models of the run on the training set in terms of fitness and R-square, showing also the exact values of their fitness and R-square. For reference, the value of Max. Fitness on the training set is also shown.

Best of Run – Testing
This heading is used to identify the best models of the run on the testing set in terms of fitness and R-square, showing also the exact values of their fitness and R-square. For reference, the value of Max. Fitness on the testing set is also shown. If no testing set is used, then a dash is shown in all the boxes under this heading.

Model
Under this heading are shown the names of all the models. By clicking a model, you are making it your active model.

Generation
Under this heading is shown the number of the generation in which the model was created.

Training Fitness
Under this heading is shown the fitness obtained on the training set.

Testing Fitness
Under this heading is shown the fitness obtained on the testing set. Note that, after a run, only the fitness of the best of run model is shown; all the others are blank. In order to update these values, you must either click on the Test All or Test Current button. If no testing set is used, though, a dash is shown in all the entries under this heading.

Training R-square
Under this heading is shown the R-square obtained on the training set.

Testing R-square
Under this heading is shown the R-square obtained on the testing set. Note that, after a run, only the R-square of the last model is shown; all the others are blank. In order to update these values, you must either click on the Test All or Test Current button. If no testing set is used, though, a dash is shown in all the entries under this heading.