Akaike Information Criterion for a fitted PLN model — AIC.PLNfit • PLNmodels

Computes the variational AIC as loglik - nb_param (larger is better). This follows the maximization convention used throughout PLNmodels.

Usage

# S3 method for class 'PLNfit'
AIC(object, ..., k = 2)

Arguments

object: an R6 object with class PLNfit
...: additional parameters for S3 compatibility. Not used
k: not used, present for S3 compatibility.

Value

A scalar: the variational AIC (larger is better).

Examples

data(trichoptera)
trichoptera <- prepare_data(trichoptera$Abundance, trichoptera$Covariate)
model <- PLN(Abundance ~ 1, data = trichoptera)
#> 
#>  Initialization...
#>  Adjusting a full covariance PLN model with nlopt optimizer
#>  Post-treatments...
#>  DONE!
AIC(model)
#> [1] -1299.624