`curvature()`#

Lcurve.curvature(beta: float) → floatSource #

Calculate L-curve curvature.

This method calculates the curvature of L-curve at the point \((\sqrt{\rho}, \sqrt{\eta})\) as function of regularization parameter \(\lambda\).

If the curvature is positive, the L-curve is concave at the point. If the curvature is negative, the L-curve is convex at the point.

Parameters:

Returns:

Examples

>>> lcurve = Lcurve(s, U, basis, data=data)
>>> curvature = lcurve.curvature(1.0e-5)

curvature()#