Q:

Does Orange scale the data automatically for the linear regression with Ridge regularization

I'm using the linear regression tool with the Ridge regularization. To use the Ridge regularization, I have to scale the data first. Does Orange scale the data automatically? I can't find any information about this mentioned in Orange's documentation for Ridge regularization.
In python's scikit-learn, I have to scale the data manually before using Ridge Regression. In MATLAB, the scaling in the Ridge function included. So, do I have to scale the data manually before I'm using the Ridge Regression in orange?
Thanks for your help.

A:

Not by default, no, as shown by the normalise=False here:

class Orange.regression.linear.RidgeRegressionLearner(alpha=1.0,
  fit_intercept=True, normalize=False, copy_X=True, max_iter=None,
  tol=0.001, solver='auto', preprocessors=None)

