- From: Ogbuji, Chimezie <OGBUJIC@ccf.org>
- Date: Wed, 26 Mar 2008 17:50:29 -0400
- To: "Kashyap, Vipul" <VKASHYAP1@PARTNERS.ORG>, public-hcls-coi@w3.org, public-semweb-lifesci@w3.org
[[ [VK] I am not sure whether there is merit in the differentiation between terminologies and information models as they are essentially the same thing. Take a look at Snomed, and you would know what I mean. ]] Okay, for me, the difference is whether or not the underlying language is backed by a some knowledge reprsentation with a formal semantics. By knowledge representation I primarily mean a language that can facilitate inference [1]. Note in that reference (which serves as my preferred definition of what a KR is) it states: "A KR is not a data structure." So, although data modeling systems such as RELAX NG and HL7 RIM might be used to refer to real entities, they do not facilitate any level of inference. [[ [VK] Given the definition above, I would more view this as an implementation or data model. ]] So, applying the above distinction, this is how I tend to think of the 'layers' (perhaps I'm oversimplifying things but this was what kept my thought process honest during the development of GRDDL): In XML, the infoset is the information model (since it cannot faciliate inference), the concrete XML sytnax is the 'data model' (or primary implementation). In RDF, the abstract model is a knowledge representation (since it *can* facilitate inference) that has a particular mapping to the XML infoset with a corresponding concrete serialization (the RDF/XML syntax). So, I think of what you call 'implementations or data models' as being synonymous with a concrete syntax. [[ [VK] The definition of knowledge representation above is closer in my mind to the notion of an information model, where the focus should be on describing information as opposed to describing structures for messaging, data manipulation, etc. ]] Does the distinction of inference change this for you? [[ [VK] I think the GRDDL standard has a big role to play in this regards. ]] Absolutely! It would be very beneficial to develop one or more GRDDL transforms for the various HL7 RIM-based exchange syntaxes. I think it would help demonstrate empirical evidence as to how big this role is. [1] http://groups.csail.mit.edu/medg/ftp/psz/k-rep.html#kr Chimezie (chee-meh) Ogbuji Lead Systems Analyst Thoracic and Cardiovascular Surgery Cleveland Clinic Foundation 9500 Euclid Avenue/ W26 Cleveland, Ohio 44195 Office: (216)444-8593 ogbujic@ccf.org =================================== P Please consider the environment before printing this e-mail Cleveland Clinic is ranked one of the top hospitals in America by U.S. News & World Report (2007). Visit us online at http://www.clevelandclinic.org for a complete listing of our services, staff and locations. Confidentiality Note: This message is intended for use only by the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Thank you.
Received on Wednesday, 26 March 2008 21:51:22 UTC