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Modelling, Methods, and Technology SIG

This is the PCA-MMT-SIG homepage. The focus of this SIG is the application of formal logical approaches to using ISO 15926 for academic research purposes.

Note : For all definitions of ISO15926 and Templates, for industrial uses, including necessary formal modeling and business language representations, and implementations refer to the [Wiki:IdsAdiProject IDS-ADI ISO15926 Pages]

Note : All references to Templates below and in referenced MMT-SIG pages should be clarified as being in this PCA-MMT-SIG Context, and avoid repetition of ISO15926 / Template definitions covered by IDS-ADI, except where there are formal logical requirements over and above ISO15926 itself.


  1. Ongoing activities
  2. Templates
    1. Template Development and ISO 15926 languages
    2. Templates documented on Wiki pages
  3. Tools in this Trac
  4. Source material
    1. Presentations
  5. Links

Ongoing activities

  • Daily work in this SIG is conducted in the context of the project, with an international team of modellers that covers a variety of aspects of the interpretation and application of ISO 15926.
  • The current focus is on ISO 15926 templates, as developed in the IDS project. The approach is due to be standardized in Part 7 of ISO 15926. See below for information on the various parts of ISO 15926 and how IDS-ADI is involved.
  • SIG MMT will strive to align work on ISO 15926 with current developments in the research field of applied logic. The representation of ISO 15926 in OWL, developed in the IDS project, is of particular practical relevance.


ISO 15926 templates are patterns for facts for which definitions are stated using rules. (Formally, a template is a first-order logic predicate.) This provides for a precise and implementation-independent interface to ISO 15926, and is intended to be applied in creating and maintaining ontologies that conform to the standard.

Templates are the subject of the in-progress ISO 15926 Part 7. They standardize valid usage patterns of Part 2, and how Part 4 and other reference data is represented. See TemplateGenerics for an introduction.

As standard usage patterns, Templates come in different levels of granularity, different levels of abstraction and specialization, represented in and mapped between different levels of expression, from business levels to explicit Part 2 patterns.

Template Development and ISO 15926 languages

Templates may be used to define and represent both reference data and project data. The following figure illustrates the relations between the languages of ISO 15926 Parts 2/4 and the template language of Part 7. In brief: Part 2 corresponds to a Description Logic (DL) TBox, i.e., classes and relations. Part 4 and other reference data populate the Part 2 structure with individual instances, a DL ABox. Templates according to Part 7 require a much more expressive, first-order language.

  • TemplateGenerics gives an informal account of what goes into the definition of a template.

Look at the bottom of this page, and of TemplateDescriptionID, for ongoing discussion on the characterization of ISO 15926 templates. A document describing the current list of templates defined in the IDS project, with roles and brief definitions in natural language, can be found as an attachment to the Intelligent Data Sets Prototype page.

Templates documented on Wiki pages

Every template defined in ISO 15926 Part 7 will be documented on a separate page in this Wiki, according to a common pattern. For a list of template pages, go to TemplateIndex.

Tools in this Trac

SIG MMT has provided certain Trac features that support the needs of modellers.

ISO 15926 Diagrams.

The Wiki provides for entering diagrams of ISO 15926 models, using a simplified set of xy-pic commands; see ISO15926Diagrams. Examples can be found in ISO15926Diagrams_BoltSet, ISO15926Diagrams_Weights.

Symbolic notation using LaTeX.

This Trac supports entering content in LaTeX format, using the LatexEquation plugin. This is useful for entering first-order formulae, and diagrams.

Macros for fetching reference data.

A facility for dynamically pulling content from the Reference Data Library for graphical display on Trac pages, using XSLT, graphviz, and the macrochain macro, is high on our wishlist. For the time being, only the XSLT macro works with Trac 0.11.

Source material


Presentations from 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. Download slides
  • A presentation of SIG MMT, describing this Trac and the need for template interfaces for creating reference data. Download slides
  • Under development, an 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.
  • Take note: A new paper called Structured Objects in OWL (Motik, Cuenca Grau, Sattler) is extremely promising with regard to finding a more natural and powerful language for defining templates. Stay tuned.

Contact: Johan W. Klüwer, johan.wilhelm.kluewer@….


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