See also: IRC log
<trackbot> Date: 08 September 2015
http://wiki.hl7.org/index.php?title=File:Vocabulary_and_Terminology_in_RDFv2.pdf
http://wiki.hl7.org/index.php?title=File:Comparison_of_ValueSet_approaches.pdf
lloyd: approach 1 is how it is in
FHIR.
... approach 2 is a subset of 1. some valuesets will make use
of the concept hierarchy.
... That's a common approach, but not the only one.
tony: But there are no concepts in #1.
lloyd: But concepts can be used with #1. So #2 is an option with #1, but you cannot get #2 out of #1.
rob: We're not complete
separating valueset definitions and valueset expansions. You
define the VS and you can do it how you want, based on codes,
or descendents of concept X, etc.
... Then you process and expand it to get the actual list of
codes, and that's what you work with.
lloyd: Expansion is a pointing
time list that gets the code by evaluating the expressions that
define what codes are included.
... We're not talking about the clinical fact at all.
... If I evaluate an expression now vs two years ago, i'll get
two different sets of codes.
tony: We bound to the medical fact when we bound the type to the observation instance.
lloyd: There are two things going
on. In the FHIR world, whenever you pass a resource around,
you're passing around an instance of a resource.
... When you turn that into ont space, (only with certain
resources), they become classes.
... A VS instance (e.g in XML ) exists independent of a medical
fact.
... The expansion of the codes can be generated independent of
medical facts also.
... The expansion operation takes a VS instance and a date and
produces a new VS instance with the expansion portion filled
in.
... And the expansion is a collection of Codings.
tony: on line 24, in the allergy-intolerance-status class, the individual is saying 'here is a restriction on something that can be allowed or not'
lloyd: we define our own URLs for all SNOMED concepts.
<scribe> ACTION: Tony to add FHIR XML examples to ValueSet document [recorded in http://www.w3.org/2015/09/08-hcls-minutes.html#action01]
<trackbot> Error finding 'Tony'. You can review and register nicknames at <http://www.w3.org/2014/HCLS/track/users>.
<scribe> ACTION: Tony to change lines 24-37 to show codes *allowed* in allergy-intolerance-status [recorded in http://www.w3.org/2015/09/08-hcls-minutes.html#action02]
<trackbot> Error finding 'Tony'. You can review and register nicknames at <http://www.w3.org/2014/HCLS/track/users>.
dbooth: lines 46-56 defines fhirvs:substance-code to be a single system/code pair.
tony: Yes. it needs the transitive concept-is-a added, to get all codes that are sub-codes.
dbooth: lines 120-121 look like they need to be in the snomed bridging ontology -- not in the generic FHIR ont.
lloyd: bridging ont also needs to
fill in things that are missing.
... Eg, doing a bridge to LOINC, and using specific names for
properties.
... And official LOINC ont does not expose it, or exposes it
using a different name. The bridging ont would need to expose
all of the pieces that are needed for using the base ont with
FHIR.
... What is base ont? Loinc publishes ont for its codes.
... The bridge ont will take the aliases that we have defined,
and link them to LOINC URLs. Could also define relationships,
properties, etc. that were not exposed or with the expected
URIs.
rob: agree. it defines things beyond what's in the LOINC ont.
dbooth: Need to show: 1. FHIR XML; 2. FHIR RDF that is produced with no knowledge of SNOMED ont; 3. relevant exerpt of SNOMED ont; 4. FHIR-SNOMED bridge ont.
lloyd: I think we really have one approach with two options
ADJOURNED
This is scribe.perl Revision: 1.140 of Date: 2014-11-06 18:16:30 Check for newer version at http://dev.w3.org/cvsweb/~checkout~/2002/scribe/ Guessing input format: RRSAgent_Text_Format (score 1.00) No ScribeNick specified. Guessing ScribeNick: dbooth Inferring Scribes: dbooth Present: Rob_Hausam Tony_Mallia David_Booth Lloyd_McKenzie Found Date: 08 Sep 2015 Guessing minutes URL: http://www.w3.org/2015/09/08-hcls-minutes.html People with action items: tony[End of scribe.perl diagnostic output]