davidwhogg / davidwhogg/DataAnalysisRecipes
Improper posterior distribution in straightline?
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Description
As far as I can tell, the 'full posterior' in equation 15 (section 3, page 13) of the straightline chapter doesn't make sense. It contradicts the rules that are layed out in Probability calculus for inference, at least the units don't match and everything on the right-hand side is conditioned on I, so shouldn't the left-hand side be too?
I suppose p(theta|I, ally) would be a consistent term for the left-hand side, and also what we want to calculate.
Anyways, thank you for an overall very helpful recipe! It's very much appreciated!
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Research direction
Start with straightline/straightline.tex, section 3, page 13, and inspect equation 15. Compare its posterior notation and units with the linked Probability calculus for inference reference. Done means resolving whether the left-hand side should include I and correcting the chapter if the reported inconsistency is confirmed.
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Assessment
- Tech stack
- tex
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100