ahartikainen
commented
3 years ago We could add a wrapper function to return InferenceData containing correct groups (data etc).
Not sure if this we need go through all the models/fits and manually check correct groups -> somekind of config db would be great.
There could a similar function as there is with arviz_data (or what was that name?)
Tell us about it
posteriordb provides a
reference_draws()containing posterior samples I would like to visualize using Arviz. The data format, however, is not easily converted and at least one other person has done the dance to convert it to anInferenceData(see https://github.com/stan-dev/posteriordb/issues/225).In detail,
reference_draws()returns a list (each element = a chain) of dicts (every key is a latent variable) whose values are 1D arrays (each entry corresponding to a single draw of that latent). Furthermore, multi-dimensional latents are broken out across multiple keys using array indexing notation (e.g.theta[0],theta[1], ...).Thoughts on implementation
@ahartikainen has a nice implementation of this conversion at https://gist.github.com/ahartikainen/ca4ec935c78c56e2d352b8d34a286fd0 which could be added as
arviz.from_posteriordb.