- From: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- Date: Tue, 17 Apr 2012 16:52:07 +0100
- To: public-prov-wg@w3.org
Hi Khalid, Can we now close this issue? Luc On 03/23/2012 01:20 PM, Luc Moreau wrote: > Hi Khalid, > > The relation wasScheduledAfter was superseded by (the overloaded) > wasStartedBy, > itself supersed by wasStartedByActivity (see resolution [1]). > > I therefore propose to close this issue unless you suggest otherwise. > > Regards, > Luc > > [1] http://www.w3.org/2011/prov/meeting/2012-03-15#resolution_2 > > > On 11/10/2011 03:47 PM, Provenance Working Group Issue Tracker wrote: >> PROV-ISSUE-148 (WasScheduledAfter): wasScheduledAfter definition is >> difficult to understand >> >> http://www.w3.org/2011/prov/track/issues/148 >> >> Raised by: Khalid Belhajjame >> On product: >> >> >> Hi, >> >> Trying to model wasScheduledAfter in PROV-O, I found it difficult to >> understand what wasScheduledAfter means. >> >> According to the definition: "Given two activity records identified >> by pe1 and pe2, the record wasScheduledAfter(pe2,pe1) holds, if and >> only if there are two entity records identified by e1 and e2, such >> that wasControlledBy(pe1,e1,qualifier(prov:role="end")) and >> wasControlledBy(pe2,e2,qualifier(prov:role="start")) and >> wasDerivedFrom(e2,e1)." >> >> There are three issues: >> 1- Why does the agent e2 needs to be derived from the agent e1? >> >> 2- Can an agent be derived from another? (This second issue is >> secondary). >> >> 3- There is an assumption in the definition that the activity pe1 >> needs to be explicitly terminated by an agent? I guess there are >> cases, the activity will terminates without an agent intervention, >> and will be followed by the execution of other activity. According to >> the above definition, in those cases, we will not be able to use >> wasScheduledAfter. >> >> khalid >> >> >> >> > -- Professor Luc Moreau Electronics and Computer Science tel: +44 23 8059 4487 University of Southampton fax: +44 23 8059 2865 Southampton SO17 1BJ email: l.moreau@ecs.soton.ac.uk United Kingdom http://www.ecs.soton.ac.uk/~lavm
Received on Tuesday, 17 April 2012 15:52:41 UTC