Plot Fisher information diagnostics

Visualize the eigenvalue spectrum and parameter loadings of a Fisher information matrix.

Usage

# S3 method for class 'fisher_info'
plot(x, type = c("eigenvalues", "loadings", "both"), ...)

Arguments

x

A fisher_info object

type

Type of plot: "eigenvalues" (default), "loadings", or "both"

...

Additional arguments passed to plotting functions

Value

Invisible x

Examples

spec <- model_spec(
  loglik_fn = function(y, mu, sigma) sum(dnorm(y, mu, sigma, log = TRUE)),
  par_names = c("mu", "sigma"),
  par_bounds = list(sigma = c(1e-6, Inf))
)
y <- rnorm(100, mean = 5, sd = 2)
info <- fisher_information(spec, y, par = c(mu = 5, sigma = 2))
plot(info)
plot(info, type = "loadings")