Maybe what Dimitris says is that this query would indeed be answered if:
- redirects were treated as sameAs and inference was used (works for this
but not all cases)
- the framework used redirects to do identity resolution at extraction time
Also, i should point out that you can probably sort this problem out with a
simple Silk link spec.
Cheers
Pablo
On Apr 13, 2011 3:12 PM, "Lushan Han" <[email protected]> wrote:
> Hi Dimitris,
>
> I am afraid that you did not completely see my point. It is not simply
> a redirection problem.
> For example, if I want to make a SPARQL query -- what is the birth
> date of the architect who designed the Brooklyn Bridge?
>
> PREFIX dbo: <http://dbpedia.org/ontology/>
>
> SELECT ?person, ?date WHERE {
> :Brooklyn_Bridge dbo:architect ?person .
> ?person dbo:birthDate ?date .
> }
>
> It should be able to return the correct answer. However, there is no
> result. The problem is caused by the redirection.
>
> I am curious that even the Wikipedia article doesn't use the
> redirection. Why does the corresponding DBpedia article use it?
>
>
> Best regards,
> Lushan Han
>
> On Wed, Apr 13, 2011 at 5:23 AM, Dimitris Kontokostas <[email protected]>
wrote:
>> Hi,
>>
>> The wikipedia article about John_Augustus_Roebling (1) redirects to
>> John_A._Roebling (2)
>> that is why you cannot find any information for (1)
>>
>> the Brooklyn Bride article has a link on the redirection article
>>
>> Although this is not an a bug, it could be resolved in the extraction
>> framework and replace all redirections to the proper articles.
>> A shell script could do the job, any ideas / comments?
>>
>> Cheers,
>> Dimitris
>>
>> On Tue, Apr 12, 2011 at 11:22 PM, Lushan Han <[email protected]> wrote:
>>>
>>> Hi,
>>>
>>> It surprised me that a dbpedia URI is not consistent with its
>>> corresponding Wikipedia URI. This is
>>> http://en.wikipedia.org/wiki/John_Augustus_Roebling. Its corresponding
>>> URI in dbpedia is http://dbpedia.org/page/John_A._Roebling. I think we
>>> need resolve this issue because i found it break link of data. For
>>> example, from http://dbpedia.org/page/Brooklyn_Bridge, you can know
>>> its dbpedia-owl:architect is dbpedia:John_Augustus_Roebling. However,
>>> when I query the rdf:type of dbpedia:John_Augustus_Roebling using
>>> SPARQL endpoint, it gave me no result. The reason is that there is no
>>> dbpedia:John_Augustus_Roebling but instead dbpedia:John_A._Roebling.
>>>
>>> I don't know how many else such URIs exist.
>>>
>>> Best regards,
>>> Lushan Han
>>>
>>>
>>>
------------------------------------------------------------------------------
>>> Forrester Wave Report - Recovery time is now measured in hours and
minutes
>>> not days. Key insights are discussed in the 2010 Forrester Wave Report
as
>>> part of an in-depth evaluation of disaster recovery service providers.
>>> Forrester found the best-in-class provider in terms of services and
>>> vision.
>>> Read this report now! http://p.sf.net/sfu/ibm-webcastpromo
>>> _______________________________________________
>>> Dbpedia-discussion mailing list
>>> [email protected]
>>> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>>
>>
>>
>> --
>> Kontokostas Dimitris
>>
>
>
------------------------------------------------------------------------------
> Forrester Wave Report - Recovery time is now measured in hours and minutes
> not days. Key insights are discussed in the 2010 Forrester Wave Report as
> part of an in-depth evaluation of disaster recovery service providers.
> Forrester found the best-in-class provider in terms of services and
vision.
> Read this report now! http://p.sf.net/sfu/ibm-webcastpromo
> _______________________________________________
> Dbpedia-discussion mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
------------------------------------------------------------------------------
Benefiting from Server Virtualization: Beyond Initial Workload
Consolidation -- Increasing the use of server virtualization is a top
priority.Virtualization can reduce costs, simplify management, and improve
application availability and disaster protection. Learn more about boosting
the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev
_______________________________________________
Dbpedia-discussion mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
