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Hello Stefan, All,

On Thu, Sep 17, 2009 at 8:31 AM, shoops <shoops@vbi.vt.edu> wrote:
>> <bqbiol:isVersionOf>
>> <rdf:bag>
>> <rdf:li rdf:resource="http://some.uri.thing.1"/>
>> <rdf:li rdf:resource="http://some.uri.thing.2"/>
>> <rdf:li rdf:resource="http://some.uri.thing.3"/>
>> <rdf:li rdf:resource="http://some.uri.thing.4"/>
>> </rdf:bag>
>> </bqbiol:isVersionOf>
>>
>> which is 1 CVTerm with 4 resources :-)
>>
>
> Actually :(
>
> because from the standpoint from RDF we have for triplets:
> subject: ???, predicate: bqbiol:isVersionOf, resource: ...1
> subject: ???, predicate: bqbiol:isVersionOf, resource: ...2
> subject: ???, predicate: bqbiol:isVersionOf, resource: ...3
> subject: ???, predicate: bqbiol:isVersionOf, resource: ...4
>
> Therfore I would expect the count of stements to be 4. The tags bag and
> li are just used for convenience/human readability. They do not change
> the datamodel.

Maybe it is equvalent for SBML/MIRIAM purposes, but in terms of RDF,
a bag is not a convenience notation for similar statements. A bag is
an object that represents a set, and the resulting statements are
different. For example, to say that Obama has two daughters, without
bags, you would say (in N3 notation):

ex:Obama ex:hasChild ex:Malia .
ex:Obama ex:hasChild ex:Sasha .

with a bag, the equivalent to above situation would be:

ex:Obama ex:hasChildren _:b0 .
_:b0 rdf:type rdf:bag .
_:b0 rdf:li ex:Malia .
_:b0 rdf:li ex:Sasha .

where _:b0 is a blank node. Instead of a blank node, you could also
use a named node, such as:

ex:Obama ex:hasChildren ex:ObamaChildren .
ex:ObamaChildren rdf:type rdf:bag .
ex:ObamaChildren rdf:li ex:Malia .
ex:ObamaChildren rdf:li ex:Sasha .

In any case, that makes one statement involving ex:Obama, but four
statements total.

Take care
Oliver

--
Oliver Ruebenacker, Computational Cell Biologist
BioPAX Integration at Virtual Cell (http://vcell.org/biopax)
Center for Cell Analysis and Modeling
http://www.oliver.curiousworld.org
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