The function logs_hhh4sims
computes the logarithmic score of the
forecast distributions based on a surveillance::hhh4()
model
and
simulations (sims
) thereof. The
forecast distributions are obtained via dhhh4sims()
as sequential
mixtures of negative binomial (or Poisson) distributions, which is
different from the kernel density estimation approach employed in
scores_sample()
.
logs_hhh4sims(observed = NULL, sims, model)
a vector or matrix of observed counts during the
simulation period. By default (NULL
), this is taken from
attr(sims, "stsObserved")
.
a "hhh4sims"
object from
surveillance::simulate.hhh4()
.
the surveillance::hhh4()
fit underlying sims
.
a vector or matrix of log-scores for the observed
counts.
scores_sample()
for an alternative approach of calculating
the logarithmic score from simulation-based forecasts