- From: Luc Moreau <l.moreau@ecs.soton.ac.uk>
- Date: Mon, 26 Mar 2012 10:33:25 +0100
- To: Graham Klyne <GK@ninebynine.org>
- CC: W3C provenance WG <public-prov-wg@w3.org>
Thanks Graham, it's now closed. Luc On 25/03/2012 10:09, Graham Klyne wrote: > Yes, I agree the restructuring has addressed much of what I raised, > and this should be closed. If necessary, I'll raise any remaining > concerns as new issues. > > #g > -- > > On 23/03/2012 13:32, Luc Moreau wrote: >> Hi Graham, >> >> The refactoring of the prov-dm document into three parts, and the >> restructuring of >> the presentation of prov-dm in components address your concerns I >> believe. >> >> The recent resolution [1] on Start and End also solves the problem >> you raised. >> >> Regarding your suggested changes to prov-n, we feel that they don't >> meet the >> requirement for compactness [2]. >> >> Given this, we propose to close the issue unless you suggest otherwise. >> >> Regards, >> Luc >> >> [1] http://www.w3.org/2011/prov/meeting/2012-03-15#resolution_3 >> [2] >> http://dvcs.w3.org/hg/prov/raw-file/default/model/prov-n.html#prov-n-rationale >> >> >> >> On 01/30/2012 10:48 AM, Provenance Working Group Issue Tracker wrote: >>> PROV-ISSUE-229 (Refactor-and-sub-edit): Document would benefit from >>> refactoring and editing [prov-dm] >>> >>> http://www.w3.org/2011/prov/track/issues/229 >>> >>> Raised by: Graham Klyne >>> On product: prov-dm >>> >>> I am finding some of the text to be repetitive, confusing and in >>> some cases >>> strangely phrased. I think a main goal of this document needs to be >>> to offer >>> an approachable description of the underlying data model and ASN >>> notation that >>> can be used by developers and information designers. I think the >>> document >>> could benefit from a serious round of sub-editing (without intending >>> to change >>> the substantive content). >>> >>> I also think that a refactoring of the DM concepts (without >>> fundamentally >>> changing the underlying intended semantics) could help to eliminate >>> a lot of >>> repetitive text. These comments relate to the recent "domain of >>> discourse" >>> vote, but I'm coming at this from a more holistic perspective. >>> >>> It seems to me that the domain of discourse contains the following >>> concepts: >>> Entity >>> Activity >>> Agent >>> Event >>> Plan >>> Account >>> in that these are the various things about which the provenance >>> language aims >>> to make assertions, and that all of these could be considered types >>> of Entity >>> (with the possible exception of Event). I think we've already >>> established that >>> most if not all of these are kinds of entity. >>> >>> If the descriptions were refactored around such a structure, I >>> believe much of >>> the repetitive description of attributes could be focused in one >>> place. I >>> would be inclined to separate attributes from the other type >>> declarations, so >>> we'd end up with primitive ASM expressions like these: >>> >>> Entity(id) >>> Activity(id, start?, end?) >>> Agent(id) >>> Plan(id) >>> Event(Id, time?) >>> Account(id) >>> Attributes(id, [attr1=val1, attr2=val2, ...]) >>> >>> Where the Attributes expression could be applied to any of the >>> preceding >>> concepts, and the description of attributes would consequently be >>> needed only >>> once. The main objection I see to this is that it would mean that, >>> say, the >>> ASN expression: >>> >>> Entity(id, [attr1=val1, attr2=val2, ...]) >>> >>> would be replaced by two expressions: >>> >>> Entity(id) >>> Attributes(id, [attr1=val1, attr2=val2, ...]) >>> >>> I would counter this by having the ASN (but not the underlying >>> model) allow >>> the first form as a syntactic sugar for the second. >>> >>> ... >>> >>> I also felt that the handling of Activity start and end was not >>> consistent: >>> according to the text, the times given correspond to Events. So why >>> not have >>> them *be* Events - that would mean we have a total of 6 event types >>> rather >>> than just 4, but the description of the "Lamport clock" timelines >>> could be >>> focused on the description of Event alone. >>> >>> ... >>> >>> I think all of this could be done with minimal change to the underlying >>> semantics, and that coupled with a significant round of sub-editing and >>> reorganization of some of the text could lead to a document that is >>> much >>> easier to follow. >>> >>> #g >>> -- >>> >>> >>> >>> >>
Received on Monday, 26 March 2012 09:34:48 UTC