
Display the criteria associated with a collection of PLNmixture fits (a PLNmixturefamily)
# S3 method for PLNmixturefamily
plot(
x,
type = c("criteria", "diagnostic"),
criteria = c("loglik", "BIC", "ICL"),
reverse = FALSE,
...
)
Produces either a diagnostic plot (with type = 'diagnostic'
) or the evolution of the criteria
of the different models considered (with type = 'criteria'
, the default).
an R6 object with class PLNmixturefamily
a character, either "criteria"
or "diagnostic"
for the type of plot.
vector of characters. The criteria to plot in c("loglik", "BIC", "ICL"). Default is c("loglik", "BIC", "ICL").
A logical indicating whether to plot the value of the criteria in the "natural" direction (loglik - 0.5 penalty) or in the "reverse" direction (-2 loglik + penalty). Default to FALSE, i.e use the natural direction, on the same scale as the log-likelihood.
additional parameters for S3 compatibility. Not used
The BIC and ICL criteria have the form 'loglik - 1/2 * penalty'
so that they are on the same scale as the model log-likelihood. You can change this direction and use the alternate form '-2*loglik + penalty', as some authors do, by setting reverse = TRUE
.
data(trichoptera)
trichoptera <- prepare_data(trichoptera$Abundance, trichoptera$Covariate)
myMixtures <- PLNmixture(Abundance ~ 1 + offset(log(Offset)),
data = trichoptera, control = PLNmixture_param(smoothing = "none"))
plot(myMixtures, reverse = TRUE)
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