skglm.penalties.L2

class skglm.penalties.L2(alpha)

`ell_2` penalty.

The penalty reads

`\alpha / 2 ||w||_2^2`

__init__(alpha)

Methods

__init__(alpha)
generalized_support(w)	Return a mask which is True for coefficients in the generalized support.
get_spec()	Specify the numba types of the class attributes.
gradient(w)	Compute the gradient of the L2 penalty.
is_penalized(n_features)	Return a binary mask with the penalized features.
params_to_dict()	Get the parameters to initialize an instance of the class.
value(w)	Compute the value of the L2 penalty.