What algorithm is used by the sklearn library?

#1

When I use the sklean library (LinearRegression) module to train the model using
model = LinearRegression()
model.fit(X)
Which algorithm is used internally?
Grad Descent pr Closed form or something else?

#2

Interesting question.
I looked up in the sklearn documentation and they haven’t specified what they use though I am quite sure they must be using Gradient descent because it’s more suitable to a wider range of data sizes.

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#3

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