W3C home > Mailing lists > Public > public-openannotation@w3.org > February 2013

Re: Two concrete/practical cookbook examples of Semantic Tags

From: Antoine Isaac <aisaac@few.vu.nl>
Date: Mon, 4 Feb 2013 17:09:18 +0100
Message-ID: <510FDD2E.6010501@few.vu.nl>
To: Paolo Ciccarese <paolo.ciccarese@gmail.com>
CC: <public-openannotation@w3.org>
On 2/4/13 4:59 PM, Paolo Ciccarese wrote:
>
>
> On Mon, Feb 4, 2013 at 10:47 AM, Antoine Isaac <aisaac@few.vu.nl <mailto:aisaac@few.vu.nl>> wrote:
>
>     On 2/4/13 4:36 PM, Paolo Ciccarese wrote:
>
>         On Mon, Feb 4, 2013 at 10:08 AM, Antoine Isaac <aisaac@few.vu.nl <mailto:aisaac@few.vu.nl> <mailto:aisaac@few.vu.nl <mailto:aisaac@few.vu.nl>>> wrote:
>
>         On 2/4/13 3:40 PM, Paolo Ciccarese wrote:
>
>         Two concrete/practical examples of Semantic Tags.
>         Please, just look at the RDF and the figure, I still working on the text.
>
>         1) A DBpedia entry used as semantic tag on an image:
>         http://www.w3.org/community/____openannotation/wiki/SE_____Semantically_Tagging_an_Image <http://www.w3.org/community/__openannotation/wiki/SE___Semantically_Tagging_an_Image> <http://www.w3.org/community/__openannotation/wiki/SE___Semantically_Tagging_an_Image <http://www.w3.org/community/openannotation/wiki/SE_Semantically_Tagging_an_Image>>
>
>         In this case I can attach oa:Tag (oa:SemanticTag?) to the URI directly as it is a DBpedia 'resource.
>
>         2) Two URIs used as semantic tags while bookmarking a webpage
>         http://www.w3.org/community/____openannotation/wiki/____Bookmarking_and_Tagging_a_____Webpage#Open_Annotation_____Representation <http://www.w3.org/community/__openannotation/wiki/__Bookmarking_and_Tagging_a___Webpage#Open_Annotation___Representation> <http://www.w3.org/community/__openannotation/wiki/__Bookmarking_and_Tagging_a___Webpage#Open_Annotation___Representation <http://www.w3.org/community/openannotation/wiki/Bookmarking_and_Tagging_a_Webpage#Open_Annotation_Representation>>
>
>         The URIs also identify the HTML page for those entities so I used the SpecificResource construct as Rob suggested.
>
>         Should we keep two different constructs?
>         Comments?
>
>
>
>         As already said I don't like the Specific Resource pattern. It messes the message of Specific Resources, by letting one think semantic tags can be obtained by "refining" a source, the same way that other specifiers do. But in the case of semantic tags of course there's nothing analogous to selectors, states, etc. Which shows well in your example: there's only oa:hasSource attached to your tag, which renders a bit absurd the use of the SR pattern.
>
>         If one wants to tie a semantic tag to a document that is very closely connected to it (one could say the document defines the concept) I'd recommend using something else. For example foaf:isPrimaryTopicOf:
>         http://xmlns.com/foaf/spec/#____term_isPrimaryTopicOf <http://xmlns.com/foaf/spec/#__term_isPrimaryTopicOf> <http://xmlns.com/foaf/spec/#__term_isPrimaryTopicOf <http://xmlns.com/foaf/spec/#term_isPrimaryTopicOf>>
>
>         Again, I strongly believe trying to address such generic concept/document problems into the OA machinery itself can only bring problems.
>
>
>         I am not sure I understand what you are saying. Are you suggesting to not include Semantic Tags?
>
>
>
>     Well, I don't have strong opinion on this. I believe we can do without and that oa:Tag is enough, but others apparently don't think so...
>
>
>
>         Could you take one of my examples and rephrase it as you would do it?
>
>
>
>     In http://www.w3.org/community/__openannotation/wiki/__Bookmarking_and_Tagging_a___Webpage#Open_Annotation___Representation <http://www.w3.org/community/openannotation/wiki/Bookmarking_and_Tagging_a_Webpage#Open_Annotation_Representation>
>     [
>     ex:spres1 a oa:SpecificResource , oa:SemanticTag ;
>     oa:hasSource MGI:88059 .
>     ex:spres2 a oa:SpecificResource , oa:SemanticTag ;
>     oa:hasSource OMIM:104760 .
>     ]
>     should be imo:
>     [
>     ex:spres1 a oa:Tag ;
>     foaf:isPrimaryTopicOf MGI:88059 .
>     ex:spres2 a oa:Tag ;
>     faof:isPrimaryTopicOf OMIM:104760 .
>     ]
>
>     With the above caveat: I am not strongly against having SemanticTag instead of oa:Tag, if others believe it is absolutely necessary.
>
>
> I think I can live with recommending that construct, I reach the same goal without misusing SpecificResource and with less triples.
> I am not sure about that use of faof:isPrimaryTopicOf though.


Well, this example is fitting the semantics of foaf:isPrimaryTopicOf, at least.
And we don't need to make a strong recommendation. It is just an example on how to do things. Again, I strongly feel that OA should not make recommendations on the process of creating semantic tags from documents.

Antoine
Received on Monday, 4 February 2013 16:09:46 UTC

This archive was generated by hypermail 2.3.1 : Tuesday, 6 January 2015 20:22:03 UTC