- From: Stephan Zednik <zednis@rpi.edu>
- Date: Sat, 23 Jul 2011 13:24:08 -0600
- To: public-prov-wg@w3.org
I do not feel that EntityInstance, EntityInstantiation, or InstantiatedEntity make sense for the book ownership scenario, or any scenario modeling the provenance of changes in characteristics of a physical object. To reiterate the example since I haven't committed it to a wiki page yet. Book X is an entity that represents a real world object. It can be put on a shelf, loaned to friends, damaged, and/or destroyed. It has important characteristics (condition, ownership, location, etc) that may change over the life of the book. We may want to represent the provenance of the book as a chain of ownership. |<----------------------------------------------------- Book X ----------------------------------------------------------------->| |<!------ Book X with owner A ---->|<----Book X with owner B ---->|<---- Book X with owner A --------->| If a book changes ownership, is the "book with changed ownership" a different EntityInstance? A different InstantiatedEntity? I don't think what we current call a BOB is an 'instance of' anything. I think of it as a description of an entity that holds for some time period (not necessarily given) for which contextually important mutable characteristics of the the entity are held to be known. --Stephan On 7/22/2011 5:29 AM, Curt Tilmes wrote: > On 07/22/2011 03:43 AM, Khalid Belhajjame wrote: >> The term "Snapshot" was suggested some time ago, and it seems that >> several people did like it. >> We can also use the term "EntitySnapshot". > > Following from snapshot: > > EntityInstance > EntityInstantiation > InstantiatedEntity > > Curt > > >
Received on Saturday, 23 July 2011 19:24:37 UTC