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From Reto Bachmann-Gmuer <reto.bachm...@trialox.org>
Subject Re: Problems with BNodes
Date Wed, 10 Feb 2010 08:14:30 GMT
Hi Tsuy

as http://clerezza.org/2009/08/platform#userName is an inverse functional
property you can do so called IFP smushing, we do not yet have any utility
for this. So yes it has to be done manually.

Note that the bnode object of dcterms:rightsHolder has no IFP so you can't
identify the rightsHolder of two images.

Cheers,
reto

On Wed, Feb 10, 2010 at 8:46 AM, Tsuyoshi Ito <tsuy.ito@trialox.org> wrote:

> Hi there
>
> I have a problem with importing images and the associated information into
> the contentgraph.
>
> The images and the associated data are available in the n3 format.
>
> e.g.
> <http://cmsdemo.trialox.org/img/original/rodoram_jpg_pic.jpg>
>      a       <http://discobits.org/ontology#InfoDiscoBit> ;
>      <http://discobits.org/ontology#InfoBit>
>              "/9j/4AAQSkZJRgABAQAAAQABAAD/7QAcUGhvd="^^<
> http://www.w3.org/2001/XMLSchema#base64Binary> ;
>      <http://discobits.org/ontology#mediaType>
>              "image/jpg"^^<http://www.w3.org/2001/XMLSchema#string> ;
>      <http://purl.org/dc/elements/1.1/creator>
>              [ a       <http://xmlns.com/foaf/0.1/#Agent> ;
>                <http://clerezza.org/2009/08/platform#userName>
>                        "test@wwf.org.nz" ;
>                <http://clerezza.org/2010/01/wwf#ldapId>
>                        "1248768038814"^^<
> http://www.w3.org/2001/XMLSchema#long> ;
>                <http://xmlns.com/foaf/0.1/#name>
>                        "Rosa Argent"
>              ] ;
>      <http://purl.org/dc/terms/created>
>              "2010-01-07T21:12:35.0+01:00"^^<
> http://www.w3.org/2001/XMLSchema#dateTime> ;
>      <http://purl.org/dc/terms/dateSubmitted>
>              "2010-01-07T21:12:35.0+01:00"^^<
> http://www.w3.org/2001/XMLSchema#dateTime> ;
>      <http://purl.org/dc/terms/description>
>              "Findcaster"@en ;
>      <http://purl.org/dc/terms/modified>
>              "2010-01-07T21:20:48.0+01:00"^^<
> http://www.w3.org/2001/XMLSchema#dateTime> ;
>      <http://purl.org/dc/terms/rightsHolder>
>              [ a       <http://xmlns.com/foaf/0.1/#Agent> ;
>                <http://xmlns.com/foaf/0.1/#name>
>                        "Rostter Dam"
>              ] ;
>      <http://www.w3.org/2003/12/exif/ns#height>
>              "724"^^<http://www.w3.org/2001/XMLSchema#int> ;
>      <http://www.w3.org/2003/12/exif/ns#width>
>              "591"^^<http://www.w3.org/2001/XMLSchema#int> .
>
> Problem description:
> The creator of an image is a BNode of type Agent (see example above). When
> I have different images  with the same creator in different n3 files it
> produces for each image a new BNode of this agent instead of having just one
> BNode of type Agent for this particular creator.
>
>
> How can I fix this? Should I upload the images and afterwards fix all
> creator properties and redundant BNodes or it there a better way for solving
> this problem
>
> Cheers
> TSuy
>
>

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