residual_norm()

GCV.residual_norm(beta: float) → floatSource

Return the residual norm: \(\sqrt{\rho} = \|\mathbf{T}\mathbf{x}_\lambda - \mathbf{b}\|_{\mathbf{Q}}\).

Parameters:

betafloat

Reguralization parameter.

Returns:

float

Residual norm \(\sqrt{\rho}\).