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qiskit.opflow.gradients.Hessian.convert

Hessian.convert(operator, params=None)[source]
Parameters

  • operator (OperatorBase) – The operator for which we compute the Hessian

  • params (Union[Tuple[ParameterExpression, ParameterExpression], List[Tuple[ParameterExpression, ParameterExpression]], List[ParameterExpression], ParameterVector, None]) – The parameters we are computing the Hessian with respect to Either give directly the tuples/list of tuples for which the second order derivative is to be computed or give a list of parameters to build the full Hessian for those parameters. If not explicitly passed, the full Hessian is constructed. The parameters are then inferred from the operator and sorted by name.

Returns

An operator whose evaluation yields the Hessian

Return type

OperatorBase