A practical introduction to OBO-Edit2
Tutorial by David Osumi-Sutherland (FlyBase)
OBO-Edit2, the new version of the popular ontology editing software, has many powerful new tools for ontology analysis and construction. This tutorial will provide an introduction to the use of OBO-Edit2 to build and maintain OBO ontologies with special emphasis on working with necessary and sufficient definitions.
'The following topics will be covered
- OBO basics
- The type/instance distinction 
- Theory of OBO relations 
- Necessary and sufficient definitions
- Avoiding tangled hierarchies 
- OBO-Edit2 basics
- Basic editing with the tree editor and the parent editor
- Basic searching, filtering and rendering
- Necessary and sufficient definitions and use of the reasoner
- Declaring disjunction and finding contradictions
- OBO-Edit2 advanced use
- Advanced searching and rendering
- Using renders to track editing progress
- Selective importation of foreign terms
- Tracking redundancy
- Graphing with OBO-Edit
- Preparing OBO files for release
- Making implied links hard and stripping redundancy.
David Osumi-Sutherland is an ontologist and curator at FlyBase, where he is responsible for development of the Drosophila anatomy and development ontologies. He is a member of the OBO-Edit working group and the OBO foundry relations ontology working group.
 Rector, A., 2003. Modularisation of Domain Ontologies Implemented in Description Logics and related formalisms including OWL. Proc. K-CAP:ACM 2003, 121-129.
 Smith B, et al., 2005 Relations in Biomedical Ontologies, Genome Biology, 2005, 6:R46.
 Smith B, wt al., 2007 "The OBO Foundry: coordinated evolution of ontologies to support biomedical data integration, Nature Biotechnology 25, 1251 - 1255.