pymc: Random Deterministics are currently broken
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- Dominant language
- Python
- Stars
- 207
- Forks
- 28
- Avg merge
- 7d 21h
- Merged PRs (30d)
- 1
Description
If a deterministic variable uses a RandomVariable, it won't properly update the seed in the expanding_function of the compiled pymc model, as we only use the numba function but do not perform the updates.
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- Read the whole issue, then the project's contributing guide.
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- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing the compiled PyMC model's expanding_function and the numba function it currently uses, focusing on how RandomVariables and deterministic variables handle seeds. Reproduce the failure with a deterministic variable using a RandomVariable, then verify that the seed is updated correctly during expansion.
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Assessment
- Tech stack
- python
- Domain
- machine-learning
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 45/100