scipy.linalg.interpolative.
estimate_spectral_norm#
- scipy.linalg.interpolative.estimate_spectral_norm(A, its=20, rng=None)[source]#
Estimate spectral norm of a matrix by the randomized power method.
- Parameters:
- A
scipy.sparse.linalg.LinearOperator Matrix given as a
scipy.sparse.linalg.LinearOperatorwith the matvec and rmatvec methods (to apply the matrix and its adjoint).- itsint, optional
Number of power method iterations.
- rng
numpy.random.Generator NumPy generator for the randomization steps in the algorithm.
- A
- Returns:
- float
Spectral norm estimate.