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Subject: Paper on EDXL_Reference Information Model
Hi All, This week in the EDXL_HAVE issues discussion Sean Barker had an issue which asks for an ontologically consistent basis for the purpose of better interoperability from an IT manager's viewpoint. I should note that this was only one of several well thought out issues from Sean that we tackled in our first session on resolving these issues from the Public Review. Among others' replies, I noted that we have had a proposal on the table for a while now to produce an EDXL Reference Information Model which is envisioned to provide that basis, and provide a sound conceptual basis for the entire EDXL family of specificatons. I have been collecting materials related to this task for the last couple of years, and this collection has recently been increased by the addition of the SOA-RM TC's Service Oriented Architecture Reference Model. Sean's suggestion was the first external request for such a thing, and it is something that I have been waiting for as a signal that the time is right to bring this up again. So I wrote a first draft of a short "Purpose" paper on what I think this thing should be and what it is for. I have attached that initial effort, and I would like you to give it a read. I think we should put it on the agenda in the next month or so. (Read from here on only if you are interested since this is additional discussion only.) I consider the attached document to be a starting point only. I want to get the conversation renewed in the TC before we receive the next submission from the expert group for some set of Situational Awareness factors in an EDXL scope because my own investigations of SAW (the common acronym for Situational AWareness--not the slasher movie series ;-) ) have shown that the overall scope is far too wide for a single EDXL specification. Note: I confined my discussion in the attached document to our own EDXL history and context, but if we take this up then I will strongly suggest that our work carefully align with and use two external efforts: 1. The CIDOC Conceptual Reference Model (CRM) http://cidoc.ics.forth.gr/ from the International Council of Museums. This is expressed solely as an RDF Schema--a kind of ontology, but short of a full OWL-DL (Web Ontology Language-Description Logic) representation. To do this requires a translation of some of their terms into an XML Schema representation. This specification has been developed over 15 years now and serves as the basis for the consistent description of human artifacts, including the base definition of the term "Artifact" with which we would need to be consistent. In addition to making an XML Schema translation of some of their terms, we would need to add only our own context to the concept of artifact--EM IT artifacts, and EM ValueListTypes as referenced IT artifacts. 2. The European Union Open Architecture and Spatial Data Infrastructure for Risk Management, from the ORCHESTRA Project http://www.eu-orchestra.org/documents.shtml This is explicitly related to Emergency Management and specifies an ontological structure with which we can align and which is also already committed to the OpenGeospatial Consortium standards, so our OASIS GML profile will fit. As a boost to the notion that we should specifically frame this specification as an XML vocabulary AND an OWL-DL ontology, I have already completed one such representation of an OASIS Committee Specification in this way in the HumanMarkup TC before it closed last year. I would, of course, like to go one step further and adopt the SOA-RM and classify the EDXL_RIM as largely based on the SOA-RM as a Reference Architecture, similar to the Global Justice Reference Architecture, which Tom can describe more fully. I mention all of this because I constrained the attached paper specifically to EDXL contextual issues with which we are already familiar as a group. Cheers, Rex -- Rex Brooks President, CEO Starbourne Communications Design GeoAddress: 1361-A Addison Berkeley, CA 94702 Tel: 510-849-2309
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