Building Ontologies with Basic Formal Ontology by Robert Arp;Barry Smith;Andrew D. Spear

Author:Robert Arp;Barry Smith;Andrew D. Spear [Spear, Robert Arp;Barry Smith;Andrew D.]
Language: eng
Format: epub
Published: 2015-08-13T19:11:00+00:00

Combination Object-Entities

BFO makes no claim to the effect that objects, object aggregates, and fiat object parts provide an exhaustive classification of the types of material entity. Thus, for example, if John owns two neighboring apartment buildings, but sells the top floor of one of them, then it may be that what he owns is the sum of an object together with a fiat object part. If Mary is studying knee injuries in a population of patients then it may be that the target of her study is an aggregate of fiat object parts.

Combination entities of this sort4 provide no special challenges to BFO. They are not included explicitly as subtypes in BFO 2.0, though they could be included in future versions of the ontology if there is a corresponding need on the part of BFO's users. We may distinguish further subtypes of fiat entities analogously also in the realm of twodimensional surfaces (for example, Arizona is a fiat part of the two-dimensional surface that is the continental United States, which may in turn be a fiat part of the twodimensional surface of the planet earth).

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