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Re: Checking the RDF for a video annotation

From: Paolo Ciccarese <paolo.ciccarese@gmail.com>
Date: Wed, 15 May 2013 11:51:36 -0400
Message-ID: <CAFPX2kAFu7Msy=b6rPSHeckz=z7L9WiqDpBLteQf=Rwga63nxQ@mail.gmail.com>
To: Stian Soiland-Reyes <soiland-reyes@cs.manchester.ac.uk>
Cc: James Smith <jgsmith@gmail.com>, public-openannotation <public-openannotation@w3.org>
ps: I just fixed the RDF type of the body from oa:Body to:
cnt:ContentAsText and dctypes:Text


On Wed, May 15, 2013 at 11:46 AM, Paolo Ciccarese <paolo.ciccarese@gmail.com
> wrote:

> Hi James,
> I believe video annotation is of growing interest in our community so I
> was wondering if you could help me out in creating an entry in the Cookbook
> with your example.
>
> This is the code I have at the moment
>
>
> <anno> a <oa:Annotation> ;
>        oa:hasBody _:body ;
>        oa:hasTarget _:target .
>
> _:body a <oa:Body> ;
>        cnt:chars "I like that!" ;
>        cnt:characterEncoding "utf-8" ;
>        dc:format "text/plain" .
>
> _:target a <oa:SpecificResource> ;
>
>          oa:hasSource <videoURL> ;
>          oa:hasSelector _:selector ;
>          oa:hasScope <pageURL>.
>
> _:selector a <oa:Composite> ;
>            oa:item _:svgSelector ;
>            oa:item _:fragSelector .
>
> _:svgSelector a <oa:SvgSelector> ;
>               cnt:chars "svg source..." ;
>               cnt:charEncoding "utf-8" ;
>               dc:format "image/svg+xml" .
>
> _:fragSelector a <oa:FragmentSelector> ;
>                dcterms:conformsTo "http://www.w3.org/TR/media-frags/" ;
>                rdf:value "t=npt:0,5" .
>
> Do you have a motivation (probably oa:commenting?) in the above example?
>
> Also, if possible,  could you provide the missing details (from a real
> example: SVG selector videoURL and pageURL) and maybe screenshots of the
> real application displaying the annotation?
>
> Best,
> Paolo
>
>
>
> On Wed, May 8, 2013 at 7:58 PM, Stian Soiland-Reyes <
> soiland-reyes@cs.manchester.ac.uk> wrote:
>
>> On 8 May 2013 18:22, James Smith <jgsmith@gmail.com> wrote:
>>
>> >> cnt:charEncoding  should be cnt:characterEncoding  - it is useful to
>> > This was a typo on my part in transcribing to email. The code has
>> cnt:characterEncoding for the RDF/JSON production. I've dropped it from the
>> JSON-LD version since JSON-LD strings are Unicode, the Unicode encoding
>> (UTF-8, -16, ...) presumably holds for the entire JSON-LD document, and I
>> didn't see it in the suggested context while I did see other properties
>> from the cnt: namespace.
>>
>> No, it is not really needed, as by its definition it is more of a
>> provenance thing, like "I read this string from a file and assumed
>> this encoding"; which probably is not true as you are generating the
>> SVG.
>>
>>
>> > I'm targeting JSON-LD at this point. This is a JavaScript application
>> living in the browser, so I figure JSON-LD is a natural fit for that aspect
>> of a video annotation system. I'll leave RDF/XML as an exercise for a
>> server component.
>>
>> (as JSON-LD supporter) Great! Then I guess you should stay far away
>> from Content as XML ;)
>>
>> --
>> Stian Soiland-Reyes, myGrid team
>> School of Computer Science
>> The University of Manchester
>> http://soiland-reyes.com/stian/work/
>>
>>
>
Received on Wednesday, 15 May 2013 15:52:07 UTC

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