Re: DBpedia Data Quality Evaluation Campaign

[Sören Auer]

Am 15.11.2012 19:12, schrieb Giovanni Tummarello:
> Am i really supposed to know if any of the fact below is wrong?
> really?

Its not about factual correctness, but about correct extraction and
representation. If Wikipedia contains false information DBpedia will
too, so we can not change this (at that point). What we want to improve,
however, is the quality of the extraction.

Best,

S�ren

> dbp-owl:PopulatedPlace/area
> "10.63" (@type = http://dbpedia.org/datatype/squareKilometre)
> dbp-owl:abstract
> "La Chapelle-Saint-Laud is a commune in the Maine-et-Loire department
> of western France." (@lang = en)
> dbp-owl:area
> "1.063e+07" (@type = http://www.w3.org/2001/XMLSchema#double)
> dbp-owl:canton
> dbpedia:Canton_of_Seiches-sur-le-Loir
> dbp-owl:country
> dbpedia:France
> dbp-owl:department
> dbpedia:Maine-et-Loire
> dbp-owl:elevation
> "85.0" (@type = http://www.w3.org/2001/XMLSchema#double)
> dbp-owl:intercommunality
> dbpedia:Pays_Loire-Angers
> dbp-owl:intercommunality
> dbpedia:Communaut�_de_communes_du_Loir
> dbp-owl:maximumElevation
> "98.0" (@type = http://www.w3.org/2001/XMLSchema#double)
> dbp-owl:minimumElevation
> "28.0" (@type = http://www.w3.org/2001/XMLSchema#double)
> dbp-owl:populationTotal
> "583" (@type = http://www.w3.org/2001/XMLSchema#integer)
> dbp-owl:postalCode
> "49140" (@lang = en)
> dbp-owl:region
> dbpedia:Pays_de_la_Loire
> dbp-prop:areaKm
> "11" (@type = http://www.w3.org/2001/XMLSchema#integer)
> dbp-prop:arrondissement
> "Angers" (@lang = en)
> dbp-prop:canton
> dbpedia:Canton_of_Seiches-sur-le-Loir
> dbp-prop:demonym
> "Capellaudain, Capellaudaine" (@lang = en)
> dbp-prop:department
> dbpedia:Maine-et-Loire
> dbp-prop:elevationM
> "85" (@type = http://www.w3.org/2001/XMLSchema#integer)
> dbp-prop:elevationMaxM
> "98" (@type = http://www.w3.org/2001/XMLSchema#integer)
> dbp-prop:elevationMinM
> "28" (@type = http://www.w3.org/2001/XMLSchema#integer)
> dbp-prop:insee
> "49076" (@type = http://www.w3.org/2001/XMLSchema#integer)
> dbp-prop:intercommunality
> dbpedia:Pays_Loire-Angers
> dbp-prop:intercommunality
> dbpedia:Communaut�_de_communes_du_Loir
>
> On Thu, Nov 15, 2012 at 4:58 PM, <zav...@informatik.uni-leipzig.de> wrote:
>> Dear all,
>>
>> As we all know, DBpedia is an important dataset in Linked Data as it is not
>> only connected to and from numerous other datasets, but it also is relied
>> upon for useful information. However, quality problems are inherent in
>> DBpedia be it in terms of incorrectly extracted values or datatype problems
>> since it contains information extracted from crowd-sourced content.
>>
>> However, not all the data quality problems are automatically detectable.
>> Thus, we aim at crowd-sourcing the quality assessment of the dataset. In
>> order to perform this assessment, we have developed a tool whereby a user
>> can evaluate a random resource by analyzing each triple individually and
>> store the results. Therefore, we would like to request you to help us by
>> using the tool and evaluating a minimum of 3 resources. Here is the link to
>> the tool: http://nl.dbpedia.org:8080/TripleCheckMate/, which also includes
>> details on how to use it.
>>
>> In order to thank you for your contributions, a lucky winner will win either
>> a Samsung Galaxy Tab 2 or an Amazon voucher worth 300 Euro. So, go ahead,
>> start evaluating now !! Deadline for submitting your evaluations is 9th
>> December, 2012.
>>
>> If you have any questions or comments, please do not hesitate to contact us
>> at dbpedia-da...@googlegroups.com.
>>
>> Thank you very much for your time.
>>
>> Regards,
>> DBpedia Data Quality Evaluation Team.
>> https://groups.google.com/d/forum/dbpedia-data-quality
>>
>> ----------------------------------------------------------------
>> This message was sent using IMP, the Internet Messaging Program.
>>
>>
>>
>>
>
>

[Amrapali Zaveri]

Hi,

In case you missed out on the following email, here's a chance to win either a Samsung Galaxy Tab 2 or an Amazon voucher worth 300 Euro !!!

Please help us in evaluating the quality of DBpedia by using the tool: http://nl.dbpedia.org:8080/TripleCheckMate/. Those who evaluate 10 or more resources have a higher chance of winning. So, go ahead, start evaluating now!

Thank you very much for your time.
Regards,
DBpedia Data Quality Evaluation Team.

> _______________________________________________
> Dbpedia-discussion mailing list
> Dbpedia-d...@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>

[Amrapali Zaveri]

Dear all,

Deadline is approaching - 9th of December !!! This is the last chance to win either a Samsung Galaxy Tab 2 or an Amazon voucher worth 300 Euro !!!

Please help us in evaluating the quality of DBpedia by using the tool: http://nl.dbpedia.org:8080/TripleCheckMate/. So far ca. 50 users have evaluated about 200 resources. Those who evaluate 10 or more resources have a higher chance of winning !! So, go ahead, start evaluating now!

Thank you very much for your time.
Regards,
DBpedia Data Quality Evaluation Team.

Regards,
Ms. Amrapali Zaveri Gokhale

University of Leipzig - Department of Computer Science
Paulinum 618, Augustusplatz 10, 04109 Leipzig, Germany
http://aksw.org/AmrapaliZaveri

[zav...@informatik.uni-leipzig.de]

Dear all,

We would like to thank all the participants who took part in the
DBpedia Data Quality Evaluation Campaign. A total of 58 participants
evaluated 521 distinct resources. This campaign has helped in
identifying the major data quality problems in DBpedia which will help
us improve the quality in the long run.

We would also like to announce the lucky winner: Maxim Kolchin !!!
Congratulations !!!

Here is a link to a manuscript which describes the methodology and
presents the results:
http://svn.aksw.org/papers/2013/ESWC_DBpediaDQ/dbpediadqpublic.pdf.

Thank you.

Regards,
DBpedia Data Quality Evaluation Team.
https://groups.google.com/d/forum/dbpedia-data-quality