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Re: PROV-ISSUE-30 (name-for-bob): What name do we use for the BOB construct? [Conceptual Model]

From: Stephan Zednik <zednis@rpi.edu>
Date: Sat, 23 Jul 2011 13:24:08 -0600
Message-ID: <4E2B1FD8.2050602@rpi.edu>
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.


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

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