- From: Khalid Belhajjame <Khalid.Belhajjame@cs.man.ac.uk>
- Date: Wed, 09 Nov 2011 14:20:20 +0000
- To: Luc Moreau <L.Moreau@ecs.soton.ac.uk>
- CC: W3C provenance WG <public-prov-wg@w3.org>
+1 khalid On 09/11/2011 08:27, Luc Moreau wrote: > Dear all, > > Kind reminder ... > > Luc > > On 11/07/2011 10:06 AM, Luc Moreau wrote: >> Dear all, >> >> Can you express your support or not for the following proposals. We >> will confirm >> the outcome at the teleconference. >> >> Best regards, >> Luc >> >> >> In the interest of simplification, we would like to make the following >> proposal about derivations in prov-dm. >> >> Context: prov-dm currently contains 3 different notions of >> derivations, in particular with names that are not intuitive. The >> constraint derivation-attributes [1] prevented derivations to be >> transitive. These constraints were removed from the prov-dm document >> last week [2]. >> >> >> >> Proposal 1. Transitive derivation is expressed using 'dependedUpon' >> between two entities. dependedUpon can be asserted or >> inferred. >> >> Proposal 2. There exists a special case of derivation, where a >> process execution is known or known to exist. This is >> expressed using: >> wasDerivedFrom(e2,e1,[pe, ...]) and its compact form >> wasDerivedFrom(e2,e1). >> >> Furthermore, there exists an inference: >> wasDerivedFrom(e2,e1,[pe, ...]) implies >> dependedUpon(e2,e1). >> >> Proposal 3. In the current version of the document, >> wasEventuallyDerivedFrom and dependedOn intended to >> express the same notion of (transitive) derivation, and >> thus can be >> removed as redundant. >> >> >> >> Instead of 3 relations wasDerivedFrom, wasEventuallyDerivedFrom, and >> dependedOn, we would now only have 2 relations wasDerivedFrom and >> dependedUpon. The awkward term 'wasEventuallyDerivedFrom' is also >> abandonned. Overall, this should contribute towards a simplification >> of the model. >> >> >> Note: the text will describe the conditions under which the binary >> form of wasDerivedFrom is transitive. >> >> >> >> >> [1] http://www.w3.org/TR/2011/WD-prov-dm-20111018/#derivation-attributes >> [2] http://www.w3.org/2011/prov/meeting/2011-11-03#resolution_5 >> >
Received on Wednesday, 9 November 2011 14:20:50 UTC