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Re: Use case template

From: Antoine Isaac <aisaac@few.vu.nl>
Date: Mon, 12 Jul 2010 23:21:13 +0200
Message-ID: <4C3B8749.6000909@few.vu.nl>
To: Emmanuelle Bermes <manue.fig@gmail.com>
CC: public-xg-lld <public-xg-lld@w3.org>
Hi Emmanuelle,


> I've started the work on merging the templates as intended in our last call.
> I didn't create a new page, but rather improve the existing one, as
> the changes were very limited (introduction + dimensions). Also we can
> always roll back to an older version.
>
> So the following 3 pages have changed :
> [1] merged the introductions and changed the "Linked data dimensions" paragraph
> [2] added references to the rationale page
> [3] simplified the dimensions page.
>
> There is still work to be done on the dimensions' content.
>
> Feedback welcome
>
> Cheers
> Emmanuelle


Thanks a lot for this! Now that I read the text you've moved to the intro of the template [1], it really looks like we-could re-use it almost as such for the wider call for use case we envision :-)

Re. feedback on the content of the template, my most important comment concerns the use of the "dimensions" at [3] in the sections of the use case template [1].
My first understanding of the "library linked data dimension" section, based on the "dimensions" of the Prov XG [4] initially there [5], is that this section would be rather technical, implementation-driven. In fact, to me the examples for filling the "library linked data dimension" section should come from the "topics" that we assembled over the past weeks (now at [6]). [4] is really closer from [6] than it is from [3].

I tried to point in the last call that our use case dimensions at [3] would be most useful for "stimulating" (re-using Stu's perfectly fitting word) the filling of the "use case" section. And I still believe it should be the case, looking at the instruction you left for that section:
[The use case scenario itself, described as a story in which actors interact with systems, each other etc. It should show who is using linked data technology and for what purpose. Please mark the key steps which show requirements on linked data in italics.
]
I think all the categories at [3] can fall in this description. Maybe only "systems" may fall as well in the "background and current practice" section.


Now, I think the point on which we fundamentally agree (and which may explain the above disagreement ;-) ) is that *the "use case dimensions" at [3] should stimulate something that comes before what the "linked data topics" at [6] would stimulate*.
The more I look at it, the more I wonder why the Prov XG had put their "provenance dimensions" before their "goal" and "use case scenario". I can see a logic here, but it's one of someone with a quite clear view on the domain's technical points--the Prov XG provided the UCs themselves--not necessarily the one of a true application owner (i.e., "business"-oriented).


I would thus suggest to have the following order:
1. Name; 2. Owner; 3. Background and Current Practice; 4. Goal; 5. Use Case Scenario [suggesting the use case dimensions at [3]); 6. Problems and Limitations; 7. Library Linked Data Dimensions (pointing to the topics at [6]; 8 Unanticipated Uses (optional); 9 Existing Work (optional)

This could have the benefit of illustrating the natural complementarity between "problems and limitations" and "LLD dimensions". For many of the Prov XG's use cases, I feel that it is the informal gathering of problems that leads to the more formal identifications of the dimensions.

Would people around here agree?


On a much smaller scale, I was not so-happy with making the distinction between "devices" and "communication" in the use cases dimensions at [3]. There is a distinction indeed, but I'm not sure we want to get that granularity here.

But as said it is indeed much less important, and I realize I've already written one page on the order of the sections of the template alone so I'll stop here :-)

Cheers,

Antoine

[1] http://www.w3.org/2005/Incubator/lld/wiki/UCTemplate1
[2] http://www.w3.org/2005/Incubator/lld/wiki/UCRationale
[3] http://www.w3.org/2005/Incubator/lld/wiki/Dimensions
[4] http://www.w3.org/2005/Incubator/prov/wiki/Provenance_Dimensions
[5] http://www.w3.org/2005/Incubator/lld/wiki/index.php?title=UCTemplate1&oldid=86#Linked_Data_Dimensions
[6] http://www.w3.org/2005/Incubator/lld/wiki/Topics3


> Hi all,
>
> I've started the work on merging the templates as intended in our last call.
> I didn't create a new page, but rather improve the existing one, as
> the changes were very limited (introduction + dimensions). Also we can
> always roll back to an older version.
>
> So the following 3 pages have changed :
> [1] merged the introductions and changed the "Linked data dimensions" paragraph
> [2] added references to the rationale page
> [3] simplified the dimensions page.
>
> There is still work to be done on the dimensions' content.
>
> Feedback welcome
>
> Cheers
> Emmanuelle
>
> [1] http://www.w3.org/2005/Incubator/lld/wiki/UCTemplate1
> [2] http://www.w3.org/2005/Incubator/lld/wiki/UCRationale
> [3] http://www.w3.org/2005/Incubator/lld/wiki/Dimensions
>
>
Received on Monday, 12 July 2010 21:21:50 GMT

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