The method optimise launches libbi to optimise the parameters
with respect to the likelihood or posterior distribution. See the options
to run.libbi for how to specify the various components of
sampling with LibBi, and the LibBi manual for all options that can be
passed when the client is optimise.
If x is given as a 'bi_model', a libbi object will be
created from the model For the help page of the base R optimise
function, see optimise.
Value
an updated libbi object