Ontolog Forum

OntoIOp (Ontology, Model and Specification Integration and Interoperability), an OMG Standard Development Initiative

shortcut to this page:

This page is now outdated. See the DOL page at

Ontology Integration and Interoperability (OntoIOp)

General Information

  • OntoIOp aims at a meta language for the specification, relation and modularisation of logical theories, with particular emphasis on (formal) ontologies, models and specifications
  • A quick overview of OntoIOp's essential features (due to Michael Grüninger, 2011-10-06; rephrased by ChristophLange):
  1. heterogeneity (within logical theories)
  2. modularity (of logical theories, including the reuse of existing logical theories)
  3. mappings (between logical theories)
  4. annotation (of logical theories and their parts)

Request for proposal (RFP)

The OMG RFP has been issued in December 2013. It can be found here.

Answer to the RFP and finalization

The Distributed Ontology, Modeling and Specification Language (DOL) has been submitted as an answer to the RFP in December 2014. It has been approved in December 2015. Currently, DOL is being finalized by the Finalization Task Force (FTF).

How can I contribute?

You can contribute in various ways:




Restricted to working group members


COLORE (Common Logic Repository)

COLORE is an open repository of first-order ontologies implemented in Common Logic. COLORE is self-contained and using one single logic, but it is distributed in its high modularity.

Meta-theoretical relationships between the COLORE ontologies are of particular interest, including maps (signature morphisms), definitional extension, conservative extension, inconsistency between modules, imports, relative interpretation, faithful interpretation, and definable equivalence. DOL allows for formalizing them (as compared to the earlier approach of just writing them down as metadata) and makes them amenable to fully automated verification with tools such as Hets (Heterogeneous Tool Set).

First mappings implemented in DOL can be found in the directories for OWL Time intervals and Periods.

Ontohub, a DOL-enabled Ontology Repository Engine

The Ontohub repository engine (productive version, demo version with latest features, sources) supports many notions of DOL as first-class citizens:

  • ontologies
  • logics (to be extended)
  • links (to be implemented)
  • logic translations (to be implemented)

This presentation introduces Ontohub with a slide show and a demo video.

Publications (newest first)

  1. Christoph Lange, Till Mossakowski, OliverKutz. LoLa: A Modular Ontology of Logics, Languages, and Translations; accepted at 6th International Workshop on Modular Ontologies (WoMO), Graz, Austria, 24 July 2012.
  2. Till Mossakowski, Oliver Kutz, Christoph Lange: Three Semantics for the Core of the Distributed Ontology Language; in 7th International Conference on Formal Ontology in Information Systems (FOIS), Graz, Austria, July 2012.
  3. Christoph Lange, Oliver Kutz, Till Mossakowski, MichaelGruninger. The Distributed Ontology Language (DOL): Ontology Integration and Interoperability Applied to Mathematical Formalization; in Conference on Intelligent Computer Mathematics (CICM), Systems & Projects track, Bremen, Germany, July 2012.
  4. Christoph Lange, Till Mossakowski, Oliver Kutz, Christian Galinski, Michael Grüninger, DanielCoutoVale. The Distributed Ontology Language (DOL): Use Cases, Syntax, and Extensibility; in Terminology and Knowledge Engineering (TKE), Madrid, Spain, June 2012. presentation slides
  5. Till Mossakowski, Oliver Kutz, ChristophLange. Semantics of the Distributed Ontology Language: Institutes and Institutions; in 21st International Workshop on Algebraic Development, Salamanca, Spain, June 7-10, 2012.
  6. Oliver Kutz, Till Mossakowski, Christian Galinski, ChristophLange. Making Heterogeneous Ontologies Interoperable Through Standardisation - A Meta Ontology Language to be Standardised: Ontology Integration and Interoperability (OntoIOp); in Accessibility Reaching Everywhere, AEGIS Workshop and 2nd International Conference, Brussels, Belgium, November 2011. (presentation slides, poster)
  7. Oliver Kutz, Till Mossakowski, Christian Galinski, ChristophLange. Towards a Standard for Heterogeneous Ontology Integration and Interoperability; in International Conference on Terminology, Language and Content Resources (LaRC), Seoul, Korea, June 2011. Proceedings (see from page 101)

The Team

The list of people on the OntoIOp working group:

  1. Sue Ellen Wright (US) - (ISO/TC37/SC3 Chair)
  2. GottfriedHerzog (DE) - (ISO/TC37/SC3 Secretary)
  3. AndreasHoffmann (DE) (since 2013.07.17)
  4. Adrian Paschke (DE) (since 2013.07.17)
  5. AlanMelby (US)
  6. AntonioPareja (ES)
  7. BodilNistrupMadsen (DK)
  8. CarlaFreericks (DE)
  9. Carmen Chui (CA)
  10. CatherineProtic (FR)
  11. ChangqingZHOU (CN)
  12. Christian Galinski (AT)
  13. ChristopheRoche (FR)
  14. Christoph Lange (DE/UK) - (Assisting Project Leader)
  15. Conrad Bock (US) (since 2013.10.23)
  16. DanGillman (US)
  17. Davide Sottara (US) (since 2013.07.17)
  18. Dosam Hwang (KR)
  19. DougLawrence (UK)
  20. EdmundSkoviak (US) (since 2013.07.17)
  21. Elisa Kendall (US) (since 2013.07.17)
  22. Fabian Neuhaus (DE) (Co-Project Leader)
  23. FrankFarance (US)
  24. Gerald Radack (US)
  25. GerhardBudin (AT) {{
  26. GuadalupeAguado (ES)
  27. HanneErdmanThomsen (DK)
  28. Harold Solbrig (US)
  29. Jerome Euzenat (FR)
  30. John Bateman (DE)
  31. John F. Sowa (US)
  32. Kiyong Lee (KR)
  33. Laurette Pretorius (ZA)
  34. Leo Obrst (US)
  35. Maria Keet (ZA)
  36. MariaPozzi (MX)
  37. Mari Carmen Suarez Figueroa (ES)
  38. MelanieMaradan (UEA-Esperanto)
  39. Michael Grüninger (CA) - (Co-Project Leader)
  40. MichaelWagner (DE) (since 2013.07.17)
  41. MonteGeorge (US)
  42. Oliver Kutz (DE) - (Co-Project Leader)
  43. Pat Hayes (US)
  44. Peter P. Yim (US)
  45. Pierre Yves Schobbens (BE) {{
  46. SebastianRudolph (DE)
  47. Stefano Borgo (IT)
  48. SylvieArbouy (FR)
  49. Tara Athan (US) (since 2013.08.16)
  50. Terry Longstreth (US)
  51. Till Mossakowski (DE) - (Project Leader)
  52. Tommie Meyer (ZA)
  53. YonghongCHENG (CN)

History (may be incomplete)