Under the subsection "Regularization in order to avoid overfitting", there is a typo in the sentence where the regularization term is described. In that sentence, j has been defined as the number of parameters/coefficients in the model. In this change, I propose to fix it by considering p as the total number of parameters instead of j.
Under the subsection "Regularization in order to avoid overfitting", there is a typo in the sentence where the regularization term is described. In that sentence, j has been defined as the number of parameters/coefficients in the model. In this change, I propose to fix it by considering p as the total number of parameters instead of j.