pymc-devs / pymc-devs/pytensor-distributions

Discrete Weibull entropy

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Dominant language
Python
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5
Forks
4
Avg merge
3h 13m
Merged PRs (30d)
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Description

We use explicit summation; usually, when we do this, we use the ppf to get reasonable bounds. But for some combination of parameters, the discrete Weibull has crazy tails, leading to a huge number of evaluations, or even before that problems creating the grid.

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Research direction

Start by locating the discrete Weibull entropy implementation and reviewing its explicit summation, ppf-based bounds, and grid construction. Reproduce a parameter combination with long tails, then define completion as avoiding excessive evaluations or grid-creation failures while preserving correct entropy results.

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Assessment

Tech stack
python
Domain
backend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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