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14:53:21 <dbooth> Meeting: FHIR RDF
14:53:24 <dbooth> Chair: David Booth
15:14:12 <dbooth> Present: David Booth, Emily Pfaff, Gopi, Gaurav
15:14:16 <dbooth> Topic: Issue 77
15:15:29 <dbooth> Gopi: Suggestion changing birthDateObject to birthDateExtension.
15:15:32 <dbooth> david: good idea
15:15:58 <dbooth> AGREED: Prefer 4b over 4a
15:20:32 <dbooth> David: 3b vs 4b?
15:20:43 <dbooth> gaurav: prefer 3b
15:20:56 <dbooth> emily: agree
15:21:00 <dbooth> gopi: agree
15:21:13 <dbooth> AGREED: Prefer 3b over 4b
15:28:43 <dbooth> david: Compare 5a vs 3U
15:28:52 <dbooth> emily: Don't like the extra ont relationships.
15:29:23 <dbooth> gopi: still prefer 3b over both of these
15:30:12 <dbooth> gaurav: calling them extensions might be simpler.
15:33:29 <dbooth> gaurav: prefer not to create all these new properties
15:36:08 <dbooth> gaurav: The fhir:Extension in 3bU seems like it could be fhir:Boolean
15:36:59 <dbooth> David: 5a, 3U or 3bU vs 3b?
15:37:10 <dbooth> emily: Prefer 3b over all of these.
15:38:19 <dbooth> gopi: 3bU makes sense if you are adding a certainty.
15:38:55 <dbooth> david: We should probably get eric's input before eliminating these, to hear his perspective.
15:41:11 <dbooth> gaurav: Slightly prefering 3bU over 3b.
15:42:11 <dbooth> gopi: One advantage of 3bU is when you're entering data you can just use that new predicate directly.
15:45:52 <dbooth> rob: might be able to pull in a package to tell the machinery about the extension.
15:47:10 <dbooth> Present+ Rob Hausam
15:48:11 <dbooth> ACTION: Gaurav to spin up on JSON-LD framing
15:49:18 <dbooth> david: more ideas to explore for these options?
15:49:31 <dbooth> gopi: What about data validation?
15:50:07 <dbooth> ... Need to validate cases, using SPARQL queries.
15:52:04 <dbooth> gopi: Been looking at RDF reification.  Extensions are similar in my mind, for the Certainty example.
15:54:29 <dbooth> ADJOURNED
15:55:10 <dbooth> rrsagent, draft minutes
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16:08:35 <dbooth> i/Suggestion changing/https://github.com/w3c/hcls-fhir-rdf/issues/77#
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16:09:35 <dbooth> i/Suggestion changing/Discussing 4a vs 4b
16:10:41 <dbooth> i/avid: 5a, 3U/david: Or it could be both a fhir:Extension and a fhir:Boolean.
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16:14:18 <dbooth> i/ADJOURNED/david: For the fhir:active example, RDF reification would be applicable, because "Certainty" is a statement about the boolean statement.  But I don't think reification would be applicable in other extension examples, such as the birthDate example, which is just a matter of adding more information (time of birth).
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16:15:05 <dbooth> i/gopi: Been looking/david: Yes, important to consider impact on validation.
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16:19:29 <dbooth> i/rob: might be able/david: Not sure of the impact of 3gU (and other RDF-style options) on conversion from RDF back to JSON.    Assuming that the standard machinery would not know about the extension.  Seems it would at least require converting the extension URL from an RDF node to a  string.
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