[general] multiple outcomes (same-ish model)?

[skolenik]

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Description

@wlandau @wlandau-lilly What is the best way to adapt stantargets to multiple outcomes? In terms of tar_stan_mcmc() interface, I have

1. the same stan_files model (just one),
2. different data for different outcomes (same structure but different models may have different number of predictors).

Elsewhere in my existing _targets.R, I have dynamic branching over outcomes. I am fine switching to static branching with explicit branch names if that is going to help materially.

[wlandau]

Static branching over tar_stan_mcmc() with archetypes::tar_eval() could work in this case.