14:58:04 <RRSAgent> RRSAgent has joined #hcls
14:58:04 <RRSAgent> logging to http://www.w3.org/2016/05/03-hcls-irc
14:58:06 <trackbot> RRSAgent, make logs world
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14:58:08 <trackbot> Zakim, this will be HCLS
14:58:08 <Zakim> ok, trackbot
14:58:09 <trackbot> Meeting: Semantic Web Health Care and Life Sciences Interest Group Teleconference
14:58:09 <trackbot> Date: 03 May 2016
15:09:31 <ericP> -> http://w3.org/brief/NDgz ShExDemo with ShEx2 example
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15:11:14 <ericP> -> http://w3.org/brief/NDgz ShExDemo with ShEx2 example
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15:15:43 <dbooth> issues list: https://github.com/w3c/hcls-fhir-rdf/issues
15:23:02 <dbooth> Topic: Canonicalization and relative URIs
15:26:18 <dbooth> JSON canonicalization is defined here: https://hl7-fhir.github.io/json.html
15:29:37 <dbooth> dbooth: We have two notions of equivalence currently : 1. byte for byte, or 2. the same after canonicalization.
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15:30:25 <dbooth> thomas: If two documents have the same meaning then they are equivalent.
15:30:47 <dbooth> dbooth: but meaning is not algorithmically determinable.
15:31:00 <dbooth> ... We need equivalence that is defined by an algorithm.
15:32:17 <dbooth> eric: FHIR abstract model, with ref impl, end up with a resource with properties.  I can check if two docs are equivalent.
15:33:09 <dbooth> dbooth: I think that is basically how the canonicalization algorithm is defined.
15:33:44 <dbooth> XML canonicalization: https://hl7-fhir.github.io/xml.html
15:37:29 <dbooth> eric: You can get FHIR doc equivalence without having the same dig signature, i.e., without having the same canonical form.
15:37:43 <dbooth> dbooth: but what do you mean by equivalence?
15:38:02 <dbooth> eric: same values in the abstract model.
15:38:14 <dbooth> dbooth: I believe that would have to be 1:1 with the canonical form.
15:39:17 <dbooth> ... If they are not 1:1 then the canonical form is deficient and needs to be corrected.
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15:56:02 <dbooth> dbooth: Need to define an algorithm, such that for any two FHIR documents A and B, equiv(A, B) is true iff if they are equivalent according to that definition of equivalence
15:56:32 <dbooth> s/definition of equivalence/algorithm/
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19:27:47 <dbooth> Present: David Booth, EricP, Gopi, Thomas Lukasik
19:27:53 <dbooth> Chair: David Booth
19:27:59 <dbooth> ADJOURNED
19:28:05 <dbooth> rrsagent, draft minutes
19:28:05 <RRSAgent> I have made the request to generate http://www.w3.org/2016/05/03-hcls-minutes.html dbooth
21:00:55 <dbooth> Topic: ==============  5PM  ==================
21:15:18 <dbooth> CANCELED