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. Author manuscript; available in PMC: 2008 Dec 1.
Published in final edited form as: Int J Med Inform. 2007 Dec;76(Supplement 3):s326–s333. doi: 10.1016/j.ijmedinf.2007.02.003

Table 2.

Ontology-related tuple types in Referent Tracking

Tuple type Phenomenon described
Ai = < IUIp, IUIa, tap> Assignment of IUIp to a particular at time tap by the particular referred to by IUIa *
Ri = <IUIa, ta, r, o, P, tr> It is asserted by the particular referred to by IUIa at time ta that the relationship r from ontology o obtains between the particulars referred to by P at time tr
Ui = <IUIa, ta, inst, o, IUIp, u, tr> It is asserted by the particular referred to by IUIa at time ta that the instantiation relation as defined in ontology o obtains between the particular referred to by IUIp and the universal u at time tr
*

the subscript ‘p’ stands for ‘particular’ and ‘a’ for ‘author’