Different coordinates for some parameters in the inference data

[hyang336]

Describe the bug
I am not sure if this is an oversight or a conscious design choice. When fitting a DDM model with random intercepts on a, v, and z, the random effect on v has a different coordinate in the returned arviz InferenceData. As far as I can tell the "subj_idx__factor_dim" coord is the same as the "v_1|subj_idx__factor_dim" coord. This may make sub-setting the InferenceData more error-prone.

HSSM version
0.2.2

Screenshots
Data variables:
a_1|subj_idx (chain, draw, subj_idx__factor_dim) float64 10MB ...
a_1|subj_idx_sigma (chain, draw) float64 320kB ...
a_Intercept (chain, draw) float64 320kB ...
t (chain, draw) float64 320kB ...
v_1|subj_idx (chain, draw, v_1|subj_idx__factor_dim) float64 10MB ...
v_1|subj_idx_sigma (chain, draw) float64 320kB ...
v_Intercept (chain, draw) float64 320kB ...
z_1|subj_idx (chain, draw, subj_idx__factor_dim) float64 10MB ...
z_1|subj_idx_sigma (chain, draw) float64 320kB ...
z_Intercept (chain, draw) float64 320kB ...
v (chain, draw, rt,response_obs) float64 861MB ...
a (chain, draw, rt,response_obs) float64 861MB ...
z (chain, draw, rt,response_obs) float64 861MB ...

[digicosmos86]

Hi @hyang336,

Thanks for reporting this. This seems to be a bug in Bambi. We have reported this to the bambi devs here. Should be fixed in HSSM once this is fixed in Bambi.