Bookmashup came from an earlier time and maybe it makes sense to rethink
owl:sameAs for bookmashup.
They are of class foaf:Document.
The only problem is, that we need a more general property to query such
links.
Use case is to query all outgoing links for all books:
Current:
select * Where {
?s rdf:type <http:dbpedia.org/ontology/Book> .
?s owl:sameAs ?o
}
If we start replacing owl:sameAs this gets more difficult:
select * where {
?s rdf:type <http://dbpedia.org/ontology/Book> .
?s ?link ?o .
FILTER ( ! regex(str(?o), "^http://dbpedia.org";))
}
Pascal, do you know a property, which we can use in addition?
rdf:seeAlso or skos:related or umbel:isLike to these match?
We could
1. weaken existing owl:sameAs links
2. add a domain specific property.
By the way, a foaf:Document is a frbr:Work or a frbr:Manifestation or
both...
-- Sebastian
Am 06.05.2013 17:43, schrieb Pascal Christoph:
> Hi Sebastian,
>
> Am 06.05.2013 12:54 schrieb Sebastian Hellmann :
>
>> I merged your links into the repo. Very good, we will include them in
>> the data base soon.
> :)
>
>> I changed the readme to adjust for your requirements.
> I've adjusted[1] a misunderstanding resulting from my incorrectly first post ,
> where I wrongly stated that:
>
> <dbpedia:...> <http://rdvocab.info/RDARelationshipsWEMI/workManifested>
> <lobid:...>
>
> To be correct, it should be
> "http://rdvocab.info/RDARelationshipsWEMI/manifestationOfWork";, thus implying
> that the dbpedia entries are frbr:Works (not frbr:Manifestations). (Our
> provided links, however, were correctly predicated).
>
> [...]
>
>> Additionally, you can include types, which result from inference of
>> the usage of the domain-specific linking property, e.g. the rdfs:domain
>> of the property. E.g. rdrel:workManifested is rdfs:domain
>> rdafrbr:Manifestation, which entails that DBpedia entries should be of
>> rdf:type rdafrbr:Manifestation.
> my fault, see above, it should be:
> "DBpedia entries should be of rdf:type rdafrbr:Work"
>
>> 3. Note that we also count links to other classes as links, so if you
>> want to add an external classification using rdf:type as linking
>> property, that is fine as well.
> hm, we at hbz are hesitant with that. While we don't want to discuss this here
> and now we want to make you aware of arising problems:
> While we think an encyclopedia generally describes a kind of abstract "work"
> rather than a concrete "manifestation" (e. g. a concrete edition of a book),
> we
> find that others classify dbpedia resources in a different way. E .g, if I
> understand correctly, the "bookmashup" dataset seems , like lobid, to describe
> *manifestations* of books, not *works*. But the bookmashup links with
> predicate
> "owl:sameAs" to dbpedia resources. These different approaches might result in
> a
> contradictionary assumptions. This is another example why the "owl:sameAs"
> predicate should be used with great care.
>
>> Thanks again Pascal,
>> Sebastian
> thank you Sebastian - looking forward to see links from dbpedia to our lod
> service :)
>
> pascal
>
> [1]https://github.com/dbpedia/dbpedia-links/pull/11/commits
>
>>
>> Am 03.05.2013 16:15, schrieb Pascal Christoph:
>>> Hi *,
>>>
>>> we[1] want to provide links between lobid and dbpedia. We would like to use
>>> an
>>> other predicate as the recommended ones[2].
>>>
>>> lobid describes manifestations of library resources, e. g. books. We find
>>> that
>>> predicates like "owl:sameAs" do not fit , because the dbpedia resources
>>> often
>>> don't only describe books but also other forms of manifestations (e .g. a
>>> play
>>> or a movie). Thus we use the predicate rdrel:workManifested[3] to link our
>>> manifestations to dbpedia resources, e. g.:
>>>
>>> <http://lobid.org/resource/HT014469321>
>>> <http://rdvocab.info/RDARelationshipsWEMI/workManifested>
>>> <http://dbpedia.org/resource/The_Last_Man> .
>>>
>>> This "means" :
>>> the lobid-resource is a "physical embodiment of an expression of a work",
>>> and
>>> that work is the dbpedia-resource (while work is defined as "A distinct
>>> intellectual or artistic creation").
>>>
>>> As for the dbpedia_links we would like to use the inverse predicate - that
>>> would be rdrel:manifestationOfWork[4] . This would imply that these
>>> dbpedia-resources are rdf:type rdrel:Work[5] (we find that quite fitting,
>>> although not every wikipedia entry is actually a "work" (e .g. [6] is
>>> rather a
>>> "manifestation" - sure someday someone will correct this entry ).
>>>
>>> What do you think - should rdrel:manifestationOfWork be recommended in our
>>> case?
>>>
>>> -o
>>>
>>> [1]http://lobid.org/
>>> [2]https://github.com/dbpedia/dbpedia-links
>>> [3]http://rdvocab.info/RDARelationshipsWEMI/workManifested
>>> [4]http://rdvocab.info/RDARelationshipsWEMI/manifestationOfWork
>>> [5]http://rdvocab.info/uri/schema/FRBRentitiesRDA/Work
>>> [6]http://dbpedia.org/resource/Five_Go_Off_to_Camp
>>>
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>>
--
Dipl. Inf. Sebastian Hellmann
Department of Computer Science, University of Leipzig
Events: NLP & DBpedia 2013 (http://nlp-dbpedia2013.blogs.aksw.org,
Deadline: *July 8th*)
Venha para a Alemanha como PhD: http://bis.informatik.uni-leipzig.de/csf
Projects: http://nlp2rdf.org , http://linguistics.okfn.org ,
http://dbpedia.org/Wiktionary , http://dbpedia.org
Homepage: http://bis.informatik.uni-leipzig.de/SebastianHellmann
Research Group: http://aksw.org
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