Model comparison with different y variables

Modeling
,
1

Hi all!

I am trying to compare several models, some of which include bf() specification and two response variables (e.g. model1 = y ~ x + z and model2 = bf(y ~ x + z, x ~ z)).

After successfully using loo_compare(), I get the warning message: “Not all models have the same y variable. (‘yhash’ attributes do not match)”.

Should I be concerned or is it expected given that some models have an extra second response variable?

Thank you in advance for looking into this.

Best,
Alyona

2

Are the extra second variable results included in the loo result (I can’t remember how brms does this, and Paul is on vacation)? Can you post the loo output separately for models 1 and 2?