Re: Sanity check Re: F2F Decision: Multiple Resources

Ah, yes, you did correctly understand my use case.  Thanks for the
clarification.

Bob


On Sun, Oct 28, 2012 at 6:34 PM, Robert Sanderson <azaroth42@gmail.com> wrote:
> Hi Bob,
>
> On Sun, Oct 28, 2012 at 3:49 PM, Bob Morris <morris.bob@gmail.com> wrote:
>> Following Rob's posting of Oct 1, 2012 [1]  explaining  the Chicago
>> F2F meeting  decision about Multiple Resources, I ask whether the
>> models I have below are correct and appropriate for the following use
>> case: We want to annotate several SpecificResources
>
> This is the key statement, which I'll come back to.
>
>> In the pre-Multiple Resources days, OA permitted multiple targets but
>> only one body, so for the use case one could write [...]
>> In this case it was (implicit? explicit?) that <theBody> applied to
>> all the Targets.
>
> The problem was that it wasn't even implicit as to how the body
> resource applied to the targets!  That was why it was so important
> that it be fixed.
>
>
>> Post the F2F decision,  I can see (at least) two solutions, depending
>> on whether one models with an oa:Set of SpecificTargets each with its
>> own Selector, or a single SpecificTarget   with an oa:Set of
>> Selectors.
>
> A Set of SpecificTargets means that the Body applies to all of the
> targets, and no longer applies when you take one of them away.  I
> don't think that's what you want, but I'm not sure.
>
> I think you mean the body to apply to each of the targets
> individually, and if one of them were to be taken away, then it would
> still apply to the rest of them.  It's essentially the same as having
> multiple annotations, all with the same body and one of the targets.
> To do this, you'd simply have multiple targets just as in the current draft.
>
> A Set of Selectors means that ALL of the selectors are applied to the
> source and the order in which they're applied is not important.  For
> example to select an area of a video within a certain time frame, it
> doesn't matter if you select the area first and then the time, or the
> time frame first and then the area, you get the right answer.
> So you would apply all of the selectors in any order, with selectors
> taking the output of the previous one as input.  Given your
> description this is certainly not what you want!
>
> This is the (crucial) difference between a set as object of the
> hasTarget predicate and as the object of the hasSelector predicate.
>
> Hope that helps!
>
> Rob



-- 
Robert A. Morris

Emeritus Professor  of Computer Science
UMASS-Boston
100 Morrissey Blvd
Boston, MA 02125-3390

IT Staff
Filtered Push Project
Harvard University Herbaria
Harvard University

email: morris.bob@gmail.com
web: http://efg.cs.umb.edu/
web: http://etaxonomy.org/mw/FilteredPush
http://www.cs.umb.edu/~ram
===
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Received on Sunday, 28 October 2012 22:46:06 UTC