HessianBase

class HessianBase(hess_method='param_shift', **kwargs)

ベースクラス: DerivativeBase

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

バージョン 0.24.0 で非推奨: 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.

パラメータ

• hess_method (Union[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

例外

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

Attributes

hess_method

Returns CircuitGradient.

戻り値

CircuitGradient.