Meeting minutes
Concept IRIs
gaurav: Still stuck at 9 of 15 votes we need. Emailed Rob Hausam for help.
Tim Prudhomme's PR
dbooth: Need to verify that the changes to the generated FHIR RDF exmaples are all correct?
ACTION: EricP to run shex validation against new FHIR RDF examples
jim: I'll work on it in the next 6 weeks.
DICOM
erich: Played with Virtuoso geosparql. Started throwing errors when I tried my data. THink it is related to default coord sys.
… Their flavor of well-known text is extended, but nart part of the standard.
… I reached out to address that.
… Didn't see Blazegraph support, but it's in the code.
… Updated issues 149.
… Trying to demostrate that it works in practice.
rob: Suggest Kevin ODonnel, int in DICOM
… About representations of imaging
eric: Do people mostly address these things by nth element of an array?
… Is that good enough?
… How do people make references to these things?
erich: In DICOM JSON it will be xy coordicates in an array.
… But when you put it into an RDF list it isn't performant.
ericp: Depends on language binding.
… In n3 I can look at it as a first-rest ladder. Or I can get it as an array in JSON.
… If I use a python lib, I could ask for the RDF graph, but I can get the lists in a special object for lists, which allow indexing.
ericp: Two issues: 1. can you efficiently get to nth element of a list. 2. Whether you have geosparql indexes.
… The reason RDF is not performat is because there is no hint to use geosparql indexes on it.
erich: They've added well-known text. Could add support for RDF lists.
ericp: Would be interesting to add that feature to communica.
erich: If it was added to geosparql it would help, but would need to be added to jena, etc.
jim: I'm currently adding some features to Communica
ericp: Dependency injection is complex
jim: I added the path querying from stardog to Communica, but tyring to figure out how to deploy it.
jim: It was created as a framework for research -- very modular.
… Also geared toward dynamic queries.
… Can access other SPARQL servers, files, etc. all at once, and does the joining on client side.
dbooth: Federation framework? Jim: yes
detlef: I like the simplicity of well-known text.
… Doesn't depend on other features.
… I can literally grap the text and parse it in JS.
… If you have geosparql plugged in then you have more possibilities.
erich: Might be good to suggest RDF list support to future version, but need to use current stds now.
Diffs of FHIR Examples from Tim Prudhomme's PR
Ericp: line 266 in new (empty fhir:binding ) is not in the old.
(EricP reviewed some diffs with Jim)
ADJOURNED