Observed Fisher information matrix from fisher_mle

Source: R/core-fisher_mle.R

Returns the negative Hessian of the log-likelihood evaluated at the MLE, which estimates the Fisher information matrix.

# S3 method for class 'fisher_mle'
observed_fim(x, ...)

Arguments

x

A fisher_mle object

...

Additional arguments (ignored)

Value

A matrix, or NULL if the Hessian was not computed