smooth.SMA.fisher_information_

property SMA.fisher_information_: NDArray | None

Observed Fisher Information matrix at the estimated parameters.

Computed only when the model was constructed with fi=True (mirrors R’s adam(..., FI=TRUE)$FI); otherwise None. The matrix is the negative Hessian of the log-likelihood evaluated at the estimated coefficient vector coef, with rows/columns in the same order.

Returns:

len(coef) × len(coef) symmetric matrix, or None if fi=False.

Return type:

NDArray or None