Difference between "Squared pearson correlation (r^2)" and "Coefficient of determination (R^2)"

[Former user]

Hi I got difference values of "Squared pearson correlation (r^2)" and "Coefficient of determination (R^2)". As I know, the first one is calculated from Sklearn library, while another one uses Scipy. I wonder why the results if different.

[Andreas Janz]

r^2 and R^2 are only equal for linear least squares regression

You may read the scikit-learn docs and the wiki page to get a better understanding:
https://scikit-learn.org/stable/modules/model_evaluation.html#r2-score
https://en.wikipedia.org/wiki/Coefficient_of_determination#As_squared_correlation_coefficient

[Benjamin Jakimow]

refactoring added MimeDataTextEdit().currentMimeData() DataSourceManager: - resolved #634 - added attribute table icon for vector sources without geometry - context menu allows to open vector sources in Attribute Editor - csv is now checked for vector source first, text file second

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