observed_fim.fisher_mle: Observed Fisher information matrix from fisher_mle

In likelihood.model: Likelihood-Based Statistical Inference in the Fisherian Tradition

Observed Fisher information matrix from fisher_mle

Description

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

Usage

## 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

likelihood.model documentation built on March 19, 2026, 9:07 a.m.