We define a new function
log_lik rather than a
logLik method because (in addition to the conceptual
difference) the documentation for
logLik states that the return value
will be a single number, whereas
log_lik returns a matrix. See
log_lik.stanreg in the rstanarm package for an
The object to use.
Arguments passed to methods. See the methods in the rstanarm package for examples.
log_lik methods should return a S by N matrix,
where S is the size of the posterior sample (the number of draws from
the posterior distribution) and N is the number of data points.
Guidelines and recommendations for developers of R packages interfacing with Stan and a demonstration getting a simple package working can be found in the vignettes included with rstantools and at http://mc-stan.org/rstantools/articles/.
# See help("log_lik", package = "rstanarm")
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