Issues with PyStan3

General
1

Hello all, I am trying out PyStan3 and I have the following issues:

  1. There is no progress bar appearing when sampling is happening (I use pycharm 2020.1.4; updated, didn’t work). From a previous thread (How to show sampling progress in Python console?) my tqdm work normally.
  2. When I hit
    posterior = stan.build(model, data=data), I get the following error:

aiohttp.client_exceptions.ContentTypeError: 0, message='Attempt to decode JSON with unexpected mimetype: text/plain; charset=utf-8', url=URL('http://127.0.0.1:63286/v1/models/msiur26q/params')

All data types and python dict worked with previous PyStan version.

Any help/suggestions will be welcomed!

2

Hi,

how big is your model (data size)?

  1. pypi (pip) does not have it yet. Current github master has it, but using current master needs a bit of experience with our set up. See https://github.com/stan-dev/pystan-next/pull/134
  2. https://github.com/stan-dev/httpstan/issues/417
3

Thanks! The data are matrices of 15x15x400 of either integers or floats.
I guess I will have to wait for the final PyStan3 release (any rough estimate when this could be?)

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4

UPDATE - 2 was solved by changing the httpstan/httpstan/app.py file. Thanks!

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