Hi, I've tried running the code for the two regression examples in the documentation here:
https://pygad.readthedocs.io/en/latest/gann.html#examples

but a typical fitness value plot is not as expected, being much worse than those shown; predictions are also very poor and errors are large. Am I missing something, or have the plots in the documentation been specially selected and are not typical outputs?

Regression Example 1 output
image
Predictions of the trained network : [array([0.33516124]), array([1.38754763])]
Absolute error : 0.7.

Regression Example 2 output

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Absolute error : 290.8024640876485.