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= Modelling, Methods, and Technology SIG =

The focus of the MMT SIG is on the basics needed to establish and maintain correct and reliable reference data. For more, see the [http://www.posccaesar.com/en-GB/PortalObject/2622/POSCCaesar.aspx MMT SIG homepage].

== Ongoing activities ==

 * We have begun publishing documentation on ISO 15926 ''templates'', as developed in the [wiki:IntelligentDataSetsPrototype IDS] project.  Templates are patterns for facts for which definitions are stated in terms of rules. This provides for a convenient and precise interface, and is intended to be used for creating and maintaining ontologies that conform to the ISO 15926 standard.

 * This Trac now supports entering content in LaTeX format, using the [http://openvest.com/trac/wiki/LatexEquation LatexEquation] plugin. This will be important for entering first-order formulae, and diagrams (see [wiki:MmtSig#ISO15926Diagrams below]).

 * A facility for dynamically pulling content from the Reference Data Library for graphical display on Trac pages, using [http://trac-hacks.org/wiki/XsltMacro XSLT], [http://trac-hacks.org/wiki/GraphvizPlugin graphviz], and the [http://trac-hacks.org/wiki/MacroChainMacro macrochain] macro, is high on our wishlist.

== Template Development ==

A document describing the current list of templates defined in the [wiki:IntelligentDataSetsPrototype IDS] project, with roles and brief definitions in natural language, can be found [http://trac.posccaesar.org/raw-attachment/wiki/IntelligentDataSetsPrototype/sc_template_defs.html here].

The following is a list of pages that describe individual templates, with definitions, diagrams, and so forth.

 * [wiki:TemplateDescriptionCIPcSQQ]

== Tools ==

=== ISO 15926 Diagrams ===

Support for entering diagrams of ISO 15926 models, using a simplified set of [http://www.tug.org/applications/Xy-pic/ xy-pic] commands, has been added to the Wiki; see Iso15926Diagrams. Here is an initial example, showing an instance of a part/whole constraint:
{{{
#!LatexEquation
\TemplateDiagram{
  !c{car}{Car}{CO Individual} [r] !r{rel}{CO Assembly} [r] !c{wheel}{Wheel}{CO Individual}
  !s{rel}{car}{CO Whole}{wheel}{CO Part}
%  !d{rel}{car}{0:1}{wheel}{3:*}
   "rel" [ur(.5)] !c{card}{3:*}{Cardinality}
   "rel" - "card"|{\roletype{End 2 Cardinality}}
   "card" [u(.5)] !c{3}{3}{ExpressReal}
   "card" - "3"|{\roletype{Minimum Cardinality}}
  }
}}}

== Presentations ==

Presentations from [http://www.posccaesar.com/en-GB/PortalObject/2803/POSCCaesar.aspx Semantic Days 2008] are available in Powerpoint format. We intend to provide PDF formatted copies shortly.
 * A Tutorial on semantic technology, with special focus on templates for ISO 15926. [source:SIG/MMT/work/presentations/IDS-tutorial-Semantic-Days-2008.ppt Download slides]
 * A presentation of SIG MMT, describing this Trac and the need for template interfaces for creating reference data. [source:SIG/MMT/work/presentations/MMT-SIG-support.ppt Download slides]


== Links ==

 * [http://rds.posccaesar.com/2008/02/OWL/ISO-15926-2_2003 The 15926-2 standard in OWL] (non-authoritative). If you wish to open this, consider [http://protege.stanford.edu/download/download.html Protege] 3.4 beta (note: build 126 or later).

 * [http://www.steptools.com/sc4/archive/oil-and-gas/15926-0002-lifecycle_integration.exp?rev=1.1&content-type=text/vnd.viewcvs-markup The 15926-2 standard in EXPRESS] (authoritative), with [http://www.tc184-sc4.org/wg3ndocs/wg3n1328/lifecycle_integration_schema/lifecycle_integration_schema.html documentation in HTML] 

 * Under development, an [http://trac.posccaesar.com/svn/SIG/MMT/work/models/ISO_15926_RDL.htm overview of ISO 15926 reference data resources]  contains a series of resources (files and links) related to Models, Methods and Technology for ISO 15926. ''Please note that access to these resources currently requires logging in, that display requires Internet Explorer, and that some of the links are limited to internal DNV use for the time being''.

Contact: Johan W. Klüwer, johan.wilhelm.kluewer@dnv.com.