Re: Agenda Oct 13 HL7 RDF / W3C COI: FHIR RDF ValueSets

Dear David,

With interest I have attended two Telcon meetings.
And I have read some slide sets from presentations.

Some remarks I want to make:
- RDF (and related formats) could be used. But this is not enough.
- In my opinion it is impossible to map all standards (such as HL7, ISO 13606, SNOMED, …) fully and safely.
Partially it is possible, but there are too many partial overlapping/conflicting concepts and modeling styes used by these standards.
Cultural, linguistic, differences exist between communities.
- To many times we focus on ‘semantic interoperability’, only, meaning that a community using implementation guides is able to agree on the meaning and use of data fields in an exchange format.
But leave a substantial amount of the epistemology of data for the reader/user to infer. Many times quite a lot of implicit knowledge is needed for the safe, correct and full interpretation
That is why I coined the new term ‘Semantic Interpretability’, meaning that it must be possible to re-use data quite some time in the future or be processed by a rules engine, safely, correctly and fully.
The implication is that we must standardize all the meta-data needed to encompass this.
- It is clear to me that when we start to model data sets there are at least two styles we can use.
Do we model documents/entities that refer to processes or model processes with entities inside?
Do we create models and specialize them by changing the name/meaning of classes or specialize them using fixed patterns of classes by changing attribute data fields?
- In addition we have to decide about overlapping/competing ways of modeling: using the structure of classes or pre or post-coordinated codes. In short we have to agree how to deal with the boundary problem.
- Each standard makes it own implicit/explicit choices about all these topics, making the notion that RDF on its self will solve all problems questionable.

Gerard Freriks
+31 620347088
gfrer@luna.nl <mailto:gfrer@luna.nl>
> On Oct 13, 2015, at 3:42 AM, David Booth <david@dbooth.org> wrote:
> 
> Main agenda this week:
> 
> - FHIR RDF ValueSets:
> http://wiki.hl7.org/index.php?title=File:Comparison_of_ValueSet_approaches.pdf
> 
> We seem to be close to getting ValueSets worked out.  Let's see if we can get them nailed down this week.
> 
> Webex for teleconference:
> https://mit.webex.com/mit/j.php?MTID=m5cd1bd8bb36825b9c4b369fd664bbb62
> dial-up: +1-617-324-0000 Access code: 645 777 110
> Meeting password: 4257
> 
> Complete agenda page:
> http://wiki.hl7.org/index.php?title=ITS_RDF_ConCall_Agenda
> 
> TO SPEED UP THE START OF OUR CALLS:
> It would help if participants would join the IRC channel prior to
> joining the teleconference line, as described below.
> 
> TELECONFERENCE DETAILS:
>   Tuesdays, 11:00am Eastern US (Boston) time zone
>   Webex for teleconference:
>   https://mit.webex.com/mit/j.php?MTID=m5cd1bd8bb36825b9c4b369fd664bbb62
>   dial-up: +1-617-324-0000 Access code: 645 777 110
>   Meeting password: 4257
>   IRC: irc.w3.org port 6665 channel #hcls
> 
> Thanks!
> David Booth
> 
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