Generic function and default method for computing predictive errors
y - yrep (in-sample, for observed y) or
y - ytilde (out-of-sample, for new or held-out y).
predictive_error.stanreg in the
rstanarm package for an example.
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The object to use.
Arguments passed to methods. See the methods in the rstanarm package for examples.
For the default method, a vector of y values the same length
as the number of columns in the matrix used as
predictive_error methods should return a D by N
matrix, where D is the number of draws from the posterior predictive
distribution and N is the number of data points being predicted per
The default method just takes
object to be a matrix and
to be a vector.
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/.
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