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14:54:37 <dbooth> rrsagent, make logs public
14:55:26 <dbooth> Meeting: FHIR RDF
14:55:29 <dbooth> Chair: David Booth
15:13:51 <dbooth> Topic: DICOM
15:20:38 <dbooth> dbooth: There are two cases: things that are not known -- someone's birthday -- versus something that will never be known, like a probe was broken and we didn't get a measurement at this point in time, and therefore we will never have a value for that thing.
15:28:44 <dbooth> gaurav: Would this be useful in specifying that e.g. a fhir:Observation is missing because it was not permitted/not permitted/not applicable? https://build.fhir.org/valueset-data-absent-reason.html
15:28:56 <dbooth> gaurav: There is also “IND” (indeterminate) in https://build.fhir.org/valueset-observation-interpretation.html
15:29:16 <dbooth> gaurav: FHIR provides a limited way to indicate that something is missing in an observation.
15:30:41 <dbooth> rob: representation of null values is important.  Two distinct cases.  Not sure whether we need separate syntaxes for them.
15:31:07 <dbooth> erich: I shared null flavors info about DICOM with EricP
15:36:36 <dbooth> erich: What if you don't yet know which use case it is?  What should you put there?  rdf:empty ?
15:37:55 <dbooth> ACTION: Erich to add option 6 for a single blank node
15:39:53 <dbooth> erich: https://dicom.nema.org/MEDICAL/Dicom/current/output/chtml/part20/sect_5.3.2.html
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15:45:20 <dbooth> erich: Might also want to handle null flavors
15:53:42 <dbooth> Topic: FHIR RDF update at HL7 WG Meetings: May 21, 11am Dallas TX time.
15:53:50 <dbooth> dbooth: I will report our progress.
15:54:31 <dbooth> detlef: Out next week.
15:54:35 <dbooth> rob: out next two weeks.
15:54:50 <dbooth> Topic: IRI Stems
15:55:09 <dbooth> gaurav: No updates yet.  Updated PR for review.
15:55:17 <dbooth> ... Radlex is thinking about it.
15:57:02 <dbooth> Present: David Booth, Rob Hausam, Detlef Grinner, Erich Bremer, Gaurav Vaidya
15:57:05 <dbooth> ADJOURNED
15:57:16 <dbooth> rrsagent, draft minutes
15:57:17 <RRSAgent> I have made the request to generate https://www.w3.org/2024/05/02-hcls-minutes.html dbooth