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Re: Summary of HL7 RDF / W3C COI call: FHIR Ontology Requirements

From: Lloyd McKenzie <lloyd@lmckenzie.com>
Date: Sat, 7 Feb 2015 08:42:14 -0700
Message-ID: <CAJ860JLqk0oqOsgamXeodyud4rKzBGyu7ch0KB2y9zSR=w2H_A@mail.gmail.com>
To: Sajjad Hussain <hussain@cs.dal.ca>
Cc: David Booth <david@dbooth.org>, w3c semweb HCLS <public-semweb-lifesci@w3.org>, "its@lists.hl7.org" <its@lists.hl7.org>
You can also close the world declaritively.  If I have a Patient with 3
phone numbers, the instance can declare it's a subclass of Patients with an
upper bound of 3 on the number of phone numbers. You can do similar things
for the vocabulary.  It's verbose, but it works.


*Lloyd McKenzie*Consultant, Information Technology Services
Gevity Consulting Inc.

 E: lmckenzie@gevityinc.com
M: +1 587-334-1110 <1-587-334-1110>
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*GEVITY**Informatics for a healthier world *

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On Fri, Feb 6, 2015 at 10:00 PM, Sajjad Hussain <hussain@cs.dal.ca> wrote:

>  I agree with Lloyd. However, we need to keep in mind that semantic web
> standard languages especially OWL rely on Open World Assumption (OWA):
>
> http://www.w3.org/TR/2004/REC-owl-guide-20040210/#StructureOfOntologies
>
> For validation purposes, while respecting OWA, it is still possible
> validate data based on " Scoped Negation as Failure":
>
> https://ai.wu.ac.at/~polleres/publications/poll-etal-2006b.pdf
>
> Best,
> Sajjad
>
> ******************************************
>
>
> On 2/6/15 11:29 PM, Lloyd McKenzie wrote:
>
> I expect we'll need to be able to handle both open-world and closed-world
> versions of the ontology.  Closed-world is essential to validation.  If a
> profile says something is 1..1 and the instance doesn't have it, then that
> needs to be flagged as an error, which open-world wouldn't do.  On the
> other hand, reasoners may well need to operate with some degree of
> open-world.  The fact something isn't present in the EHR doesn't
> necessarily mean it isn't true.  I'd be happy for us to include something
> like this:
>
>  SHOULD: OWL ontology should allow expressions enforcing both closed
> world and open-world reasoning against instances.
>
>
> *Lloyd McKenzie *Consultant, Information Technology Services
> Gevity Consulting Inc.
>
>  E: lmckenzie@gevityinc.com
> M: +1 587-334-1110 <1-587-334-1110>
> W: gevityinc.com
>
>
> *GEVITY **Informatics for a healthier world *
>
> CONFIDENTIALITY – This communication is confidential and for the exclusive
> use of its intended recipients. If you have received this communication by
> error, please notify the sender and delete the message without copying or
> disclosing it*.*
>
> NOTE: Unless explicitly stated otherwise, the opinions and positions
> expressed in this e-mail do not necessarily reflect those of my employer,
> my clients nor the organizations with whom I hold governance positions
>
> On Fri, Feb 6, 2015 at 9:20 PM, David Booth <david@dbooth.org> wrote:
>
>> Hi Sajjad,
>>
>> On 02/04/2015 07:12 AM, Sajjad Hussain wrote:
>>
>>> Hi All,
>>>
>>> Responding to Action # 2 carried during last call:
>>>
>>> http://www.w3.org/2015/02/03-hcls-minutes.html#action02
>>> <http://www.w3.org/2015/02/03-hcls-minutes.html#action02>
>>>
>>> I would suggest the following wording for FHIR Ontology Requirement # 11
>>> (
>>> http://wiki.hl7.org/index.php?title=FHIR_Ontology_Requirements#11._Enable_Inference
>>> <http://wiki.hl7.org/index.php?title=FHIR_Ontology_Requirements>)
>>>
>>> 11. Enable Inference
>>> (MUST) The FHIR ontology must enable OWL/RDFS inference with
>>> monotonicity and open world assumption [1]
>>> [1] http://www.cs.man.ac.uk/~drummond/presentations/OWA.pdf
>>> <http://www.cs.man.ac.uk/%7Edrummond/presentations/OWA.pdf>
>>>
>>
>> I would expect the closed world assumption to be used quite a lot to  in
>> data validation and perhaps other ways, so I would be uncomfortable having
>> that as a MUST requirement.
>>
>> David Booth
>>
>>  Best regards,
>>> Sajjad
>>>
>>> ***************************************************
>>>
>>> On 2/3/15 10:45 PM, David Booth wrote:
>>>
>>>> On today's call we almost finished working out our FHIR ontology
>>>> requirements.  Only two points remain to be resolved:
>>>> http://wiki.hl7.org/index.php?title=FHIR_Ontology_Requirements
>>>>
>>>>   - Sajjad suggested that the wording of requirement #11 be changed to
>>>> be clearer, and agreed to suggest new wording.  Current wording:
>>>> "Enable Inference: The FHIR ontology must enable OWL/RDFS inference."
>>>>
>>>>  - Paul Knapp noted that requirement #16 is related to requirement #2,
>>>> and suggested that they might be merged.
>>>>
>>>> We did not get to other agenda today.
>>>>
>>>> The full meeting log is here:
>>>> http://www.w3.org/2015/02/03-hcls-minutes.html
>>>>
>>>> Thanks!
>>>> David Booth
>>>>
>>>>
>>>>
>>>
>>
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Received on Saturday, 7 February 2015 15:43:06 UTC

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