Re: [Wikidata] Comparisons between DBpedia and Wikidata

[Kingsley Idehen]

On 4/18/17 5:04 AM, Dimitris Kontokostas wrote:
> Hi, a few clarifications from my side
> A more up-to-date link for the data is
> here: https://gist.github.com/jimkont/01f6add8527939c39192bcb3f840eca0
> 
> and this dump was not generated with federated queries, as this was
> not possible at the time of creation but with a simple script
>
> it is meant only as a proof-of-concept project that showcases
> differences in birthdates between Wikidata, Dutch Wikipedia and Greek
> Wikipedia as extracted in the DBpedia 2016-04 release, (which also
> means that it is based on ~1y old data)
>
> Best,
> Dimitris

Dimitris,

Here are links to SPARQL-FED queries that hit both DBpedia and Wikidata
endpoints. Basically, you have a federated query over 3 SPARQL Endpoints.


[1] https://tinyurl.com/mdkgg7h -- SPARQL-FED Results Page

[2]
https://medium.com/virtuoso-blog/on-the-mutually-beneficial-nature-of-dbpedia-and-wikidata-5fb2b9f22ada
 
-- Post about both projects using variant of SPARQL-FED example above.


Kingsley
>
>
> On Mon, Apr 17, 2017 at 4:14 PM, Gerard Meijssen
> mailto:gerard.meijs...@gmail.com>> wrote:
>
> Hoi,
> With the recent introduction of federation for DBpedia, it is
> possible to have queries for the DBpedias for a specific language
> and Wikidata. I have blogged how we can make use for this [1].
>
> It makes it much easier to compare Wikidata and DBpedia and when
> we take this serious and apply some effort we can make a tool like
> the one by Pasleim [2] for Wikipedias that do not have a category
> for people who died in a given year.
> Thanks,
>   GerardM
>
> [1] 
> http://ultimategerardm.blogspot.nl/2017/04/wikidata-user-story-dbpedia-death-and.html
> 
> 
> [2] http://tools.wmflabs.org/pltools/recentdeaths/
> 
>
>
>
>
> On 1 April 2017 at 11:34, Gerard Meijssen
> mailto:gerard.meijs...@gmail.com>> wrote:
>
> Hoi,
> I was asked by one of the DBpedia people to write a project
> plan.. I gave it a try [1].
>
> The idea is to first compare DBpedia with Wikidata where a
> comparison is possible. When it is not (differences in their
> classes for instance) it is at first not what we focus on.
>
> Please comment on the talk page and when there are things
> missing in the plan, please help it improve.
> Thanks,
>  GerardM
>
>
>
> [1]
> https://www.wikidata.org/wiki/User:GerardM/DBpedia_for_Quality
> 
>
>
> On 1 April 2017 at 10:44, Reem Al-Kashif
> mailto:reemalkas...@gmail.com>> wrote:
>
> Hi
>
> I don't have an idea about how to develop this, but it
> seems like an interesting project!
>
> Best,
> Reem
>
> On 30 Mar 2017 10:17, "Gerard Meijssen"
>  > wrote:
>
> Hoi,
> Much of the content of DBpedia and Wikidata have the
> same origin; harvesting data from a Wikipedia.  There
> is a lot of discussion going on about quality and one
> point that I make is that comparing "Sources" and
> concentrating on the differences particularly where
> statements differ is where it is easiest to make a
> quality difference.
>
> So given that DBpedia harvests both Wikipedia and
> Wikidata, can it provide us with a view where a
> Wikipedia statement and a Wikidata statement differ.
> To make it useful, it is important to subset this
> data. I will not start with 500.000 differences but I
> will begin when they are about a subset that I care
> about.
>
> When I care about entries for alumni of a university,
> I will consider curating the information in question.
> Particularly when I know the language of the Wikipedia.
>
> When we can do this, another thing that will promote
> the use of a tool like this is when regularly (say
> once a month) numbers are stored and trends are published.
>
> How difficult is it to come up with something like
> this. I know this tool would be based on DBpedia but
> there are several reasons why this is good. First it
> gives added relevance to DBpedia (without detracting
> from Wikidata) and secondly as DBpedia updates on RSS
> changes for several Wikipedias, the effect of these
> 

Re: [Wikidata] Comparisons between DBpedia and Wikidata

[Dimitris Kontokostas]

Hi, a few clarifications from my side
A more up-to-date link for the data is here: https://gist.github.com/
jimkont/01f6add8527939c39192bcb3f840eca0
and this dump was not generated with federated queries, as this was not
possible at the time of creation but with a simple script

it is meant only as a proof-of-concept project that showcases differences
in birthdates between Wikidata, Dutch Wikipedia and Greek Wikipedia as
extracted in the DBpedia 2016-04 release, (which also means that it is
based on ~1y old data)

Best,
Dimitris


On Mon, Apr 17, 2017 at 4:14 PM, Gerard Meijssen 
wrote:

> Hoi,
> With the recent introduction of federation for DBpedia, it is possible to
> have queries for the DBpedias for a specific language and Wikidata. I have
> blogged how we can make use for this [1].
>
> It makes it much easier to compare Wikidata and DBpedia and when we take
> this serious and apply some effort we can make a tool like the one by
> Pasleim [2] for Wikipedias that do not have a category for people who died
> in a given year.
> Thanks,
>   GerardM
>
> [1] http://ultimategerardm.blogspot.nl/2017/04/wikidata-user
> -story-dbpedia-death-and.html
> [2] http://tools.wmflabs.org/pltools/recentdeaths/
>
>
>
>
> On 1 April 2017 at 11:34, Gerard Meijssen 
> wrote:
>
>> Hoi,
>> I was asked by one of the DBpedia people to write a project plan.. I gave
>> it a try [1].
>>
>> The idea is to first compare DBpedia with Wikidata where a comparison is
>> possible. When it is not (differences in their classes for instance) it is
>> at first not what we focus on.
>>
>> Please comment on the talk page and when there are things missing in the
>> plan, please help it improve.
>> Thanks,
>>  GerardM
>>
>>
>>
>> [1] https://www.wikidata.org/wiki/User:GerardM/DBpedia_for_Quality
>>
>>
>> On 1 April 2017 at 10:44, Reem Al-Kashif  wrote:
>>
>>> Hi
>>>
>>> I don't have an idea about how to develop this, but it seems like an
>>> interesting project!
>>>
>>> Best,
>>> Reem
>>>
>>> On 30 Mar 2017 10:17, "Gerard Meijssen" 
>>> wrote:
>>>
 Hoi,
 Much of the content of DBpedia and Wikidata have the same origin;
 harvesting data from a Wikipedia.  There is a lot of discussion going on
 about quality and one point that I make is that comparing "Sources" and
 concentrating on the differences particularly where statements differ is
 where it is easiest to make a quality difference.

 So given that DBpedia harvests both Wikipedia and Wikidata, can it
 provide us with a view where a Wikipedia statement and a Wikidata statement
 differ. To make it useful, it is important to subset this data. I will not
 start with 500.000 differences but I will begin when they are about a
 subset that I care about.

 When I care about entries for alumni of a university, I will consider
 curating the information in question. Particularly when I know the language
 of the Wikipedia.

 When we can do this, another thing that will promote the use of a tool
 like this is when regularly (say once a month) numbers are stored and
 trends are published.

 How difficult is it to come up with something like this. I know this
 tool would be based on DBpedia but there are several reasons why this is
 good. First it gives added relevance to DBpedia (without detracting from
 Wikidata) and secondly as DBpedia updates on RSS changes for several
 Wikipedias, the effect of these changes is quickly noticed when a new set
 of data is requested.

 Please let us know what the issues are and what it takes to move
 forward with this, Does this make sense?
 Thanks,
GerardM

 http://ultimategerardm.blogspot.nl/2017/03/quality-dbpedia-a
 nd-kappa-alpha-psi.html

 ___
 Wikidata mailing list
 Wikidata@lists.wikimedia.org
 https://lists.wikimedia.org/mailman/listinfo/wikidata


>>> ___
>>> Wikidata mailing list
>>> Wikidata@lists.wikimedia.org
>>> https://lists.wikimedia.org/mailman/listinfo/wikidata
>>>
>>>
>>
>
> ___
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> Wikidata@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikidata
>
>


-- 
Kontokostas Dimitris
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Re: [Wikidata] Comparisons between DBpedia and Wikidata

[Gerard Meijssen]

Hoi,
With the recent introduction of federation for DBpedia, it is possible to
have queries for the DBpedias for a specific language and Wikidata. I have
blogged how we can make use for this [1].

It makes it much easier to compare Wikidata and DBpedia and when we take
this serious and apply some effort we can make a tool like the one by
Pasleim [2] for Wikipedias that do not have a category for people who died
in a given year.
Thanks,
  GerardM

[1]
http://ultimategerardm.blogspot.nl/2017/04/wikidata-user-story-dbpedia-death-and.html
[2] http://tools.wmflabs.org/pltools/recentdeaths/




On 1 April 2017 at 11:34, Gerard Meijssen  wrote:

> Hoi,
> I was asked by one of the DBpedia people to write a project plan.. I gave
> it a try [1].
>
> The idea is to first compare DBpedia with Wikidata where a comparison is
> possible. When it is not (differences in their classes for instance) it is
> at first not what we focus on.
>
> Please comment on the talk page and when there are things missing in the
> plan, please help it improve.
> Thanks,
>  GerardM
>
>
>
> [1] https://www.wikidata.org/wiki/User:GerardM/DBpedia_for_Quality
>
>
> On 1 April 2017 at 10:44, Reem Al-Kashif  wrote:
>
>> Hi
>>
>> I don't have an idea about how to develop this, but it seems like an
>> interesting project!
>>
>> Best,
>> Reem
>>
>> On 30 Mar 2017 10:17, "Gerard Meijssen" 
>> wrote:
>>
>>> Hoi,
>>> Much of the content of DBpedia and Wikidata have the same origin;
>>> harvesting data from a Wikipedia.  There is a lot of discussion going on
>>> about quality and one point that I make is that comparing "Sources" and
>>> concentrating on the differences particularly where statements differ is
>>> where it is easiest to make a quality difference.
>>>
>>> So given that DBpedia harvests both Wikipedia and Wikidata, can it
>>> provide us with a view where a Wikipedia statement and a Wikidata statement
>>> differ. To make it useful, it is important to subset this data. I will not
>>> start with 500.000 differences but I will begin when they are about a
>>> subset that I care about.
>>>
>>> When I care about entries for alumni of a university, I will consider
>>> curating the information in question. Particularly when I know the language
>>> of the Wikipedia.
>>>
>>> When we can do this, another thing that will promote the use of a tool
>>> like this is when regularly (say once a month) numbers are stored and
>>> trends are published.
>>>
>>> How difficult is it to come up with something like this. I know this
>>> tool would be based on DBpedia but there are several reasons why this is
>>> good. First it gives added relevance to DBpedia (without detracting from
>>> Wikidata) and secondly as DBpedia updates on RSS changes for several
>>> Wikipedias, the effect of these changes is quickly noticed when a new set
>>> of data is requested.
>>>
>>> Please let us know what the issues are and what it takes to move forward
>>> with this, Does this make sense?
>>> Thanks,
>>>GerardM
>>>
>>> http://ultimategerardm.blogspot.nl/2017/03/quality-dbpedia-a
>>> nd-kappa-alpha-psi.html
>>>
>>> ___
>>> Wikidata mailing list
>>> Wikidata@lists.wikimedia.org
>>> https://lists.wikimedia.org/mailman/listinfo/wikidata
>>>
>>>
>> ___
>> Wikidata mailing list
>> Wikidata@lists.wikimedia.org
>> https://lists.wikimedia.org/mailman/listinfo/wikidata
>>
>>
>
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Re: [Wikidata] Comparisons between DBpedia and Wikidata

[Gerard Meijssen]

Hoi,
I was asked by one of the DBpedia people to write a project plan.. I gave
it a try [1].

The idea is to first compare DBpedia with Wikidata where a comparison is
possible. When it is not (differences in their classes for instance) it is
at first not what we focus on.

Please comment on the talk page and when there are things missing in the
plan, please help it improve.
Thanks,
 GerardM



[1] https://www.wikidata.org/wiki/User:GerardM/DBpedia_for_Quality


On 1 April 2017 at 10:44, Reem Al-Kashif  wrote:

> Hi
>
> I don't have an idea about how to develop this, but it seems like an
> interesting project!
>
> Best,
> Reem
>
> On 30 Mar 2017 10:17, "Gerard Meijssen"  wrote:
>
>> Hoi,
>> Much of the content of DBpedia and Wikidata have the same origin;
>> harvesting data from a Wikipedia.  There is a lot of discussion going on
>> about quality and one point that I make is that comparing "Sources" and
>> concentrating on the differences particularly where statements differ is
>> where it is easiest to make a quality difference.
>>
>> So given that DBpedia harvests both Wikipedia and Wikidata, can it
>> provide us with a view where a Wikipedia statement and a Wikidata statement
>> differ. To make it useful, it is important to subset this data. I will not
>> start with 500.000 differences but I will begin when they are about a
>> subset that I care about.
>>
>> When I care about entries for alumni of a university, I will consider
>> curating the information in question. Particularly when I know the language
>> of the Wikipedia.
>>
>> When we can do this, another thing that will promote the use of a tool
>> like this is when regularly (say once a month) numbers are stored and
>> trends are published.
>>
>> How difficult is it to come up with something like this. I know this tool
>> would be based on DBpedia but there are several reasons why this is good.
>> First it gives added relevance to DBpedia (without detracting from
>> Wikidata) and secondly as DBpedia updates on RSS changes for several
>> Wikipedias, the effect of these changes is quickly noticed when a new set
>> of data is requested.
>>
>> Please let us know what the issues are and what it takes to move forward
>> with this, Does this make sense?
>> Thanks,
>>GerardM
>>
>> http://ultimategerardm.blogspot.nl/2017/03/quality-dbpedia-
>> and-kappa-alpha-psi.html
>>
>> ___
>> Wikidata mailing list
>> Wikidata@lists.wikimedia.org
>> https://lists.wikimedia.org/mailman/listinfo/wikidata
>>
>>
> ___
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> Wikidata@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikidata
>
>
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Re: [Wikidata] Comparisons between DBpedia and Wikidata

[Reem Al-Kashif]

Hi

I don't have an idea about how to develop this, but it seems like an
interesting project!

Best,
Reem

On 30 Mar 2017 10:17, "Gerard Meijssen"  wrote:

> Hoi,
> Much of the content of DBpedia and Wikidata have the same origin;
> harvesting data from a Wikipedia.  There is a lot of discussion going on
> about quality and one point that I make is that comparing "Sources" and
> concentrating on the differences particularly where statements differ is
> where it is easiest to make a quality difference.
>
> So given that DBpedia harvests both Wikipedia and Wikidata, can it provide
> us with a view where a Wikipedia statement and a Wikidata statement differ.
> To make it useful, it is important to subset this data. I will not start
> with 500.000 differences but I will begin when they are about a subset that
> I care about.
>
> When I care about entries for alumni of a university, I will consider
> curating the information in question. Particularly when I know the language
> of the Wikipedia.
>
> When we can do this, another thing that will promote the use of a tool
> like this is when regularly (say once a month) numbers are stored and
> trends are published.
>
> How difficult is it to come up with something like this. I know this tool
> would be based on DBpedia but there are several reasons why this is good.
> First it gives added relevance to DBpedia (without detracting from
> Wikidata) and secondly as DBpedia updates on RSS changes for several
> Wikipedias, the effect of these changes is quickly noticed when a new set
> of data is requested.
>
> Please let us know what the issues are and what it takes to move forward
> with this, Does this make sense?
> Thanks,
>GerardM
>
> http://ultimategerardm.blogspot.nl/2017/03/quality-
> dbpedia-and-kappa-alpha-psi.html
>
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> Wikidata@lists.wikimedia.org
> https://lists.wikimedia.org/mailman/listinfo/wikidata
>
>
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[Wikidata] Comparisons between DBpedia and Wikidata

[Gerard Meijssen]

Hoi,
Much of the content of DBpedia and Wikidata have the same origin;
harvesting data from a Wikipedia.  There is a lot of discussion going on
about quality and one point that I make is that comparing "Sources" and
concentrating on the differences particularly where statements differ is
where it is easiest to make a quality difference.

So given that DBpedia harvests both Wikipedia and Wikidata, can it provide
us with a view where a Wikipedia statement and a Wikidata statement differ.
To make it useful, it is important to subset this data. I will not start
with 500.000 differences but I will begin when they are about a subset that
I care about.

When I care about entries for alumni of a university, I will consider
curating the information in question. Particularly when I know the language
of the Wikipedia.

When we can do this, another thing that will promote the use of a tool like
this is when regularly (say once a month) numbers are stored and trends are
published.

How difficult is it to come up with something like this. I know this tool
would be based on DBpedia but there are several reasons why this is good.
First it gives added relevance to DBpedia (without detracting from
Wikidata) and secondly as DBpedia updates on RSS changes for several
Wikipedias, the effect of these changes is quickly noticed when a new set
of data is requested.

Please let us know what the issues are and what it takes to move forward
with this, Does this make sense?
Thanks,
   GerardM

http://ultimategerardm.blogspot.nl/2017/03/quality-dbpedia-and-kappa-alpha-psi.html
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