HessianBase

class qiskit.opflow.gradients.HessianBase(hess_method='param_shift', **kwargs)

Bases: DerivativeBase

Deprecated: Base class for the Hessian of an expected value.

0.24.0 ভার্সন থেকে ডেপ্রিকেটেড: The class qiskit.opflow.gradients.hessian_base.HessianBase is deprecated as of qiskit-terra 0.24.0. It will be removed no earlier than 3 months after the release date. For code migration guidelines, visit https://qisk.it/opflow_migration.

প্যারামিটার:

• hess_method (str | CircuitGradient) -- The method used to compute the state/probability gradient. Can be either 'param_shift' or 'lin_comb' or 'fin_diff'. Ignored for gradients w.r.t observable parameters.

• kwargs (dict) -- Optional parameters for a CircuitGradient

রেইজেস:

ValueError -- If method != fin_diff and epsilon is not None.

Attributes

hess_method

Returns CircuitGradient.

রিটার্নস:

CircuitGradient.