- From: Timothy Lebo <lebot@rpi.edu>
- Date: Mon, 6 Feb 2012 20:26:30 -0500
- To: Stian Soiland-Reyes <soiland-reyes@cs.manchester.ac.uk>
- Cc: Daniel Garijo <dgarijo@delicias.dia.fi.upm.es>, Provenance Working Group <public-prov-wg@w3.org>
On Feb 6, 2012, at 7:56 PM, Stian Soiland-Reyes wrote: > On Mon, Feb 6, 2012 at 21:43, Daniel Garijo > <dgarijo@delicias.dia.fi.upm.es> wrote: > >> you may want to say that an entity has been created and assert some metadata >> about the creation (hour, >> location, etc.), but not want/know which activity produced it. That is why >> everything can optional but the entity. > > This is a valid explanation, however then you have still included the > time or the attributes, and not covering Tim's question. > > > However, I don't see any reason why we need to spend effort making > wasGeneratedBy(e) 'forbidden' - +1, but perhaps we make a note of it in the definition, "wasGeneratedBy([],e) is not a meaningful assertion" > it could still be used with a note if > someone wants to give metadata about the generation (say why the > activity and time could not be recorded!) But you'd need to name the Generation, so you'd be at wasGeneratedBy(gen, e) and no longer in the case wasGeneratedBy([], e) -Tim > > > -- > Stian Soiland-Reyes, myGrid team > School of Computer Science > The University of Manchester >
Received on Tuesday, 7 February 2012 01:39:40 UTC