Dear all,

just getting my head around STAN, and came across the Eight Schools example as described here [1] and have some questions:

- Coming from the BUGS language, I wonder about the advantage of the “target +=” notation vs “~” sampling notation?
- I would have expected that in the “standardized parametrization” also the overall treatment effect parameter mu and the parameter eta would require the definition of a prior distribution, but these are missing. How does Stan deal with this, since the model still works? Where is this behaviour documented?

Kr, SR

Refs

[1] RStan: the R interface to Stan