- From: Paul Groth <p.t.groth@vu.nl>
- Date: Mon, 25 Jul 2011 11:19:56 +0200
- To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- CC: "public-prov-wg@w3.org" <public-prov-wg@w3.org>
I thought we were getting somewhere with snapshot..... I don't think ENTITY really captures the intuition behind a BOB. It's too general. thanks, Paul Luc Moreau wrote: > The word 'Entity' should also be considered for the construct BOB. > > If we do so, the text 'characterized entity' should be replaced by > something else in the draft specification. > Why not 'thing'? > > > So, the text could become: > > Section 4. > In the world (whether real or not), there are things, which can be > physical, digital, conceptual, or otherwise, and activities involving > things. > Words such as thing or activity should be understood with their > informal meaning. > This specification is concerned with characterized things, that is, > things and their situation in the world, as perceived by the asserter. > > Section 5.1 > An ENTITY represents an identifiable characterized thing. > > > Luc > > On 07/24/2011 11:43 PM, Reza B'Far wrote: >> First, for the record Khalid was the person suggesting Snapshot :) >> >> The way I've seen snapshot used commercially, it's fairly consistent >> with the current definition of BOB. There is some murkiness on both >> sides (how "snapshot" is used commercially and I think we're still >> iterating here on the definition of BOB, but may be that's close to be >> finalized). However, I think they are close enough. What I liked >> about "Snapshot" is that its intuitive and is used in several domains >> that I know of (content management, legal, configuration systems, and >> I've also seen use-cases in microfilm production by old-school >> librarians). Also, I think "Snapshot" offers a huge advantage that >> it's neither explicitly linked to the entity nor its state. And I >> know the distinction between entity vs. entity's state and how that's >> articulated has been in a lot of the discussions. Using "Snapshot" >> sort of obsoletes that discussion. >> >> On 7/24/11 12:57 PM, Stephan Zednik wrote: >>> I am not partial to snapshot, partially because of the extensive >>> functional usage of the term. I have always associated a snapshot >>> with a point in time, not a duration - but this may be an incorrect >>> association. >>> >>> I am open to discussing it, but my initial inclination was negative >>> towards it. >>> >>> Will we use the same definition as we have been using for BOB? >>> >>> --Stephan >>> >>> On Jul 24, 2011, at 9:52 AM, "Reza B'Far"<reza.bfar@oracle.com> wrote: >>> >>>> I second the term "Snapshot". This term also has functional usage >>>> in several commercial application categories used within roughly the >>>> same meaning. >>>> >>>> On 7/24/11 3:45 AM, Khalid Belhajjame wrote: >>>>> Hi Stephan, >>>>> >>>>> Given the example you gave in your previous email, I think that >>>>> "EntitySpanshot" or "Snapshot" should be fine, given that it >>>>> reflect the fact that it is a description of an entity that holds >>>>> for some period of time. >>>>> >>>>> Do you agree? >>>>> >>>>> khalid >>>>> >>>>> On 23/07/2011 20:24, Stephan Zednik wrote: >>>>>> 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 >>>>>>> >>>>>>> >>>>>>> > -- Dr. Paul Groth (p.t.groth@vu.nl) http://www.few.vu.nl/~pgroth Assistant Professor Knowledge Representation & Reasoning Group Artificial Intelligence Section Department of Computer Science VU University Amsterdam
Received on Monday, 25 July 2011 09:22:41 UTC