Deltares / Deltares/ProbabilisticLibrary
the 4 parameter variant of the beta distribution is not available
Nobody has claimed this yet.
- Dominant language
- C++
- Stars
- 8
- Forks
- 1
- Avg merge
- 4d 18h
- Merged PRs (30d)
- 4
Description
In the WBI / Fortran version of the probabilistic library, the beta distribution is the 4 parameter version of the beta distribution. That means that besides the 2 shape parameters, also 2 parameters for the scaling are present: the lower bound and the upper bound for which the pdf > 0.
See: https://en.wikipedia.org/wiki/Beta_distribution#Four_parameters
Reporter: @epsig
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the beta distribution entry point in the C++ probabilistic library and reviewing how its existing parameters are represented. Compare the current behavior with the linked WBI/Fortran four-parameter definition and the referenced beta-distribution specification. Done means the lower and upper bounds are supported alongside the two shape parameters and the resulting PDF matches that definition.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- data
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100