doc: Document the validation model, context and inheritance principle #94
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Thanks for writing it up @effigies ! In my state of mind of bids-standard/bids-2-devel#54 -- should I provide feedback as if this validation model already formulated (that is what we have in deno validator) or having being worked on and thus having a potential for renamings/restructuring? |
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I would prefer just on the current model. If/when we restructure, we can update the explanation. |
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| Using this basis, `loadSidecar` is simply: |
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where in validator we would apply inheritance's walkBack to .tsv files? e.g. if there is top level sessions.tsv and then sub-01/sub-01_sessions.tsv ?
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BIDS does not have this concept yet, so the validator does not have it. We would need to define it to know whether walkBack is even applicable (augment sub-01_sessions.tsv with sessions.tsv), or if we need to construct one global table (augment sessions.tsv with sub-*_sessions.tsv).
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To what .tsv files we have that principle applied so far ?
We do list not only .json but also .bvec and .tsv files in https://github.com/bids-standard/bids-specification/blob/master/src/common-principles.md#the-inheritance-principle
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Yes, those are the associated files, see a couple lines down from here.
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Thanks! I do not see any kind of "inheritance" operation there though like here | sidecar -- there it just returns first found instead of "building up" the value.
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From https://bids-specification.readthedocs.io/en/stable/common-principles.html#rules:
For tabular files and other simple metadata files (for instance, bvec / bval files for diffusion MRI), accessing metadata associated with a data file MUST consider only the applicable file that is lowest in the filesystem hierarchy.
Co-authored-by: Yaroslav Halchenko <[email protected]>
Current names duplicate their "domain" (subject_ or session_), inconsistent in plurality (_id although for all ids), and not clear really what 'phenotype' corresponds to without reading the description. With proposed change there is no duplication of the domain, consistency in plurality (albeit 'id' is an abbreviation so 'ids' is a non-word), and IMHO clearer meaning in `ids_phenotype`. This would also allow for generalization across other entities in a perspective bids-standard/bids-2-devel#54 - where then any entity with folders for its level could have `dirs`. Also it could come handy to determine `ids` for some other entities in tests. Ref: bids-standard/bids-validator#94 (comment) TODOs - [ ] introduce corresponding changes to bids-validator
This PR adds discussion of the validation model, intended to be along the lines of the "Explanations" quadrant of diataxis.
I would be interested in feedback on whether this is understandable. I move back and forth between Python for algorithm, typescript for type definition and YAML for data description. They feel natural to me, but I've been up to the eyeballs in this stuff.
@yarikoptic @bendhouseart Could I trouble you for reviews?
Rendered docs: https://bids-validator--94.org.readthedocs.build/en/94/validation-model/index.html