SHALC Validation / Derivation Examples

[Stephen-Gates]

I'm wondering if it would be useful to provide a collection of snippets of SHALC validation so people could assemble their own validation rules into something that suits their needs. Provide instructions on how to combine the snippets into a bespoke set for the data being collected.

For example:

hasLocation

A Grave's Lat, Lon must be within the:

• the Cemetery's bounding rectangle
• the Cemetery's shape

hasLocalAddress

• addressLevel1 - Portion is within set of Cemetery valid values (e.g. 1 to 20, and 5A and 7A)
• addressLevel2 - Section is within the set of valid values for the specified Portion in the Cemetery.
• addressLevel3 - Grave is within the set of Cemetery Portion Section valid values.

ageAtDeath

Calculate / estimate age at death from incomplete birthDate (e.g. 1899-06) and deathDate (1919-11-29).

[rwarren2]

I'm all for it. ...can I get you to commit to starting a shacl for it?

I'm still thinking through the mechanics of plots, but you might enjoy this blog post concerning imprecise birthdates. It's a bit dated and needs more work but you see where I am going with it.

[Stephen-Gates]

Never used SHACL before but happy to give it a go.

Folder structure and file names?

Is there any particular way you'd like the folders structured? E.g.

Graves
  |- documentation
  |- ontology
  |- validation (perhaps there's a better name if this includes ways to derive data?)
    |- readme.md (instructions including how to develop and run tests, combine tests, etc.)
    |- hasLocation  (Class or Property being tested)
      |- BoundingRectangle  (Test Case)
        |- readme.md  (what does this test for, limitations, etc.)
        |- BoundingRectangleTest.ttl  (the SHACL file. Any preference for file naming style - Camel, Kebab, Snake?)
        |- BoundingRectangleTestData.rdf  (Assume .rdf is preferred, or would .ttl be ok? This may limit tool choice)
      |- SecondTestCase
    |- hasLocalAddress
      |- etc.

Any tooling suggestions?

• I downloaded GraphDB and imported graves.owl v1.5 to get started but am disappointed with the ontology authoring side - seems to be more import and store data rather than author ontology, rules or data.
• Topbraid EDG doesn't seem to have a free version anymore.
• SHACL plug-in for Protégé.
• SHACL Playground - only supports .ttl and JSON-LD
• SHACL Play!

[Stephen-Gates]

That's a good joke that keeps on giving 😆. Happy with the direction on dates - store at the best precision you have. I think most of my imprecision is on Person birthDate and deathDate.

[Stephen-Gates]

@rwarren2 I've made a start at https://github.com/Stephen-Gates/graves/blob/main/validation/readme.md

Feedback very welcome, especially on how best to organise Test ideas.