Basic Formal Ontology (BFO)
BFO grows out of a philosophical orientation which overlaps with that of DOLCE and SUMO. Unlike these, however, it is narrowly focused on the task of providing a genuine upper ontology which can be used in support of domain ontologies developed for scientific research, as for example in biomedicine within the framework of the OBO Foundry. Thus BFO does not contain physical, chemical, biological or other terms which would properly fall within the special sciences domains. BFO is the upper level ontology upon which OBO Foundry ontologies are built.
This BFO 2.0 version represents a major update to BFO and is not strictly backwards compatible with BFO 1.1. The previous OWL version of BFO, version 1.1.1 will remain available at http://ifomis.org/bfo/1.1 and will no longer be updated. The BFO 2.0 OWL is a classes-only specification. The incorporation of core relations has been held over for a later version.