LASSO docs. Default value of l1_ratio is 1. Documentation says its 0.5

https://github.com/scikit-learn/scikit-learn/blob/95119c13af77c76e150b753485c662b7c52a41a2/sklearn/linear_model/_coordinate_descent.py#L358

On this webpage: https://scikit-learn.org/stable/modules/generated/sklearn.linear_model.Lasso.html in “Parameters” section, there’s text: “l1_ratio : float, default=0.5”

But default for class sklearn.linear_model.Lasso is l1_ratio = 1.0

[jeremiedbb]

@parthe your first link points to ElasticNet, but your second link points to Lasso.

Lasso has no l1_ratio parameter. The regularization is controlled by alpha (with a default value of 1.0). The regularization in ElasticNet is controlled by alpha and l1_ratio and the default value of l1_ratio is 0.5.

I think the docs are correct

[agramfort]

well indeed I see “l1_ratio: float, default=0.5” in the docstring of the path method

but this is due to the fact that the path method is shared with ElasticNet.