W3C home > Mailing lists > Public > public-openannotation@w3.org > August 2012

Re: Associating context with an annotation

From: Paolo Ciccarese <paolo.ciccarese@gmail.com>
Date: Fri, 17 Aug 2012 12:49:34 -0400
Message-ID: <CAFPX2kAuba07R0NiCVeL4yudtWYT_UnSS+szKn3CmawyJ11yDA@mail.gmail.com>
To: Sebastian Hellmann <hellmann@informatik.uni-leipzig.de>
Cc: James Smith <jgsmith@gmail.com>, public-openannotation <public-openannotation@w3.org>
On Fri, Aug 17, 2012 at 11:38 AM, Sebastian Hellmann <
hellmann@informatik.uni-leipzig.de> wrote:

> Hi James,


> As a comparison: the context model in NIF serves mainly these purposes:
> 1. limit the things that you can say about a selection (words are highly
> ambigue, depending on the granularity "house" can have dozens of meanings
> http://en.wiktionary.org/wiki/house#English-abode  ). Thus "house" in a
> certain context is less ambigue and can not have all readings any more.
> For 1. If no explicit reference is given, NIF always implicitly assumes
> that the context is the whole document. This is consistent to an annotator,
> who marks a text and adds a DBpedia URI to a specific selection. The
> annotator could annotate the text "Barack" because he knows the document is
> talking about Obama.  The current restriction is that the selection and the
> context have the same format. This allows to encode an "in" or "part of"
> meaning into the "hasContext" property, which is really helpful for
> machines. Thinking about annoting a video in a blogpost. It seems strange
> to me to only annotate part of a video in part of the document.  So when
> having different media, I would assume that we only want to annotate
> "whole" things such as a "whole" video in a "whole" blogpost.  Note that I
> don't mean that you can connect a part of a text to part of an image. I am
> just saying that it might not be a hasContext relation.

In OA the first part - selection and the context have the same format - is
covered by the SpecificResource. When you have a fragment of a text or a
video you always have a pointer to the whole document/resource. Did I miss
something there?

I could annotate a fragment of the video with a comment saying 'it is not
consistent with the text of the blogpost'. This annotation is targeting a
video fragment and the context is the document of the blogpost. In science
we have plenty of similar examples for images/figures. I agree though that
the example could be more explicit by elicitating that hasContext more by
creating a more detailed annotation explicitly targeting the fragment of
the video and the fragment of the page. However, the latter requires lots
of work more that not all application/users are willing to perform.


> Am 17.08.2012 15:57, schrieb James Smith:
>  I've added a page (http://www.w3.org/community/**openannotation/wiki/**
>> Annotating_Resource-in-**Context_Proposals<http://www.w3.org/community/openannotation/wiki/Annotating_Resource-in-Context_Proposals>)
>> linked off of the Open Issues page. Not sure it's in the right place or has
>> the right title, so feel free to edit. Feel free to add to it.
>> The page briefly outlines the problem, a scenario, and two ways in which
>> we might associate a context with an annotation.
>> -- Jim
Dr. Paolo Ciccarese
Biomedical Informatics Research & Development
Instructor of Neurology at Harvard Medical School
Assistant in Neuroscience at Mass General Hospital
+1-857-366-1524 (mobile)   +1-617-768-8744 (office)

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Received on Friday, 17 August 2012 16:50:01 UTC

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