W3C

– DRAFT –
FHIR RDF

01 May 2025

Attendees

Present
Erich Bremer, EricP, Gaurav Vaidya, Jim Balhoff, Rob_Hausam
Regrets
-
Chair
David Booth
Scribe
dbooth

Meeting minutes

FHIR RDF Playground

https://fhircat.github.io/fhir-rdf-playground/

erich: I'm writing a java lib to make Amazon storage look like linked web storage.
… 30-40 billion triples
… Stress testing the use of RDF lists.
… Complex datatypes would help, such as being discussed now.

erich: Also looking at https://www.w3.org/TR/dx-prof-conneg/
… How would FHIR RDF be in a SOLID pod?

ericP: We used all turtle in Janeira Digital. One thing that will be confusing: FHIR is using weak media types but claiming them as strong.
… They're violating the rules of strong etags, in a way that makes them weak.

erich: How FHIR compliant are EHRs like Cerner?

ericP: A lot of systems are pretty far behind, like DSTU 2 or3.
… Paris system is using FHIR R4, but have extensions for R5.
… Business interests want vendor lock-in, rather than standards compliance.

dbooth: I've heard that F5 doesn't have much uptake, but they expect R6 to have more.

gaurav: Playground has a bunch of IRI code, and some tests. I wrote a PR that fixes that.

ACTION: EricP to review gaurav's playground PR

URIs for FHIR Paths -- issue 61

w3c/hcls-fhir-rdf#61

Agreed to close due to lack of interest/expertise.

Update HAPI server to RDF R5 features #100

w3c/hcls-fhir-rdf#100

ericP: Waiting for ShEx validation of examples

Need to re-enable shex validation in FHIR build #81

w3c/hcls-fhir-rdf#81

jim: round-trip validation has been disabled for a long time, because it is too slow.

ericP: ShEx validation is also disabled.
… Grahame made a change that broke it, and it took a lot of time to figure out why.
… But it also took a long time to run.
… Iovka is working on an efficient validator for current FHIR RDF ShEx (using EXTENDS).
… Claude and I will work w her in Lille on that (in a few days).
… Then it could be re-enabled in the build process.

dbooth: EricP is planning to get this working again soon, and hoping to get it back into the FHIR build process.

Add a top level node for each FHIR code ontology? #57

w3c/hcls-fhir-rdf#57

dbooth: I think this would become more important to folks who are using the FHIR valuesets in reasoning

dbooth: Closing due to lack of interest/expertise.

FHIR RDF ontology URLs do not resolve #48

w3c/hcls-fhir-rdf#48

jim: The classes in our ont have URLs that do resolve.
… e.g. http://hl7.org/fhir/ClinicalUseDefinitionWarningComponent

ericP: The way forward would be to come up w a compelling use case, then go to Grahame.

dbooth: That's assuming we don't change the URIs. Another possibility would be to change those URIs, to put them under subdirectories that we can more easily control.

ADJOURNED

Summary of action items

  1. EricP to review gaurav's playground PR
Minutes manually created (not a transcript), formatted by scribe.perl version 244 (Thu Feb 27 01:23:09 2025 UTC).

Diagnostics

Succeeded: s/FHIR RDF Playground/Topic: FHIR RDF Playground/

No scribenick or scribe found. Guessed: dbooth

Maybe present: dbooth, erich, gaurav, jim

All speakers: dbooth, erich, ericP, gaurav, jim

Active on IRC: dbooth