`gaussian_dlm_obs` summary does not state if sequential processing is used
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Description
When V is a vector sequential processing is used. This should be explicit in the first paragraph. Right now it just says that a more effecient processing can be used when V is a diagonal matrix. So the user does not know if Stan ever does this sequential processing or only if a diagonal matrix is supplied. In fact, it is used only when V is a vector see https://github.com/stan-dev/math/blob/c0de977b5a3c701b1e71c4f7a15d806b0159d4c6/stan/math/prim/prob/gaussian_dlm_obs_lpdf.hpp#L40
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Research direction
Open the gaussian dynamic linear models section at the linked Functions Reference page and compare its first paragraph with stan/math/prim/prob/gaussian_dlm_obs_lpdf.hpp around line 40. Update the summary so it explicitly distinguishes vector V, which uses sequential processing, from diagonal-matrix processing; the documentation is done when that behavior is unambiguous.
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- Tech stack
- tex
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- documentation
- Issue type
- Documentation
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- 1/5
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- Under an hour
- Activity status
- Stale
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- Clearly specified
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- 68/100