Re: [Dbpedia-discussion] Advancing the DBpedia ontology

2015-02-03 Thread Heiko Paulheim

Hi all,

I am currently working with Aldo Gangemi on exploiting the mappings to 
DOLCE (and the high level disjointness axioms in DOLCE) for finding 
modeling issues both in the instances and the ontology.


I will not be able to travel to the meeting either, but of course we 
will share our findings once we're finished, and probably also ask for 
some input and feedback.


Cheers,
Heiko


Am 03.02.2015 um 09:39 schrieb Harald Sack:

Dear Dimitris,
I'm happy to hear that more work will be invested into a 
reorganization of the DBpedia ontology. As you might know, together 
with Magnus we have already invested some thoughts (and publications) 
into the topic with the focus on data cleansing based on an improved 
DBpedia ontology.[1,2]  Unfortunately, Magnus and I will not be able 
to participate live at the Dublin Meeting in Feb 9. Nevertheless, we 
would like to contribute.


From our perspective we would like to apply the DBpedia ontology to 
detect inconsistencies and flaws in DBpedia facts. This should not 
only be possible in a retroactive way, but should take place much 
earlier. Besides the detection of inconsistencies during the mapping 
process or afterwards in the extracted data, this could already be 
possible right from the start when the user is changing the wikipedia 
infobox content (in the sense of type checking for 
domain/range, checking of class disjointness and further constraints, 
plausibility check for dates in connection with basic axioms to be 
defined, etc.). Another possibility would be a tool that makes 
inconsistencies/flaws in wikipedia data visible directly in the 
wikipedia interface, where users could either correct them or confirm 
facts that are originally in doubt. To achieve this, not only a 
formally sound and semantically enrichedDBpedia ontology including a 
set of basic axioms would be necessary, but also the applications and 
infrastructure that make use of the ontology.


Also the relation of the DBpedia ontology to other ontologies would be 
a rather interesting topic. This includes the already proposed 
schemata (schema.org http://schema.org, facebook OG, etc) as well as 
established ontologies (yago, umbel, etc...) where mapping to DBpedia 
entities already exist. Can we make use of these ontologies (and 
existing mappings) to complement DBpedia ontology in som 
(semi-)automated way?


Thanks and best regards,
  Harald

[1] G. Töpper, M. Knuth, and H. Sack: DBpedia ontology enrichment for 
inconsistency detection. i-SEMANTICS 2012
[2] J. Waitelonis, N. Ludwig, M. Knuth, H. Sack: Whoknows? - 
Evaluating Linked Data Heuristics with a Quiz that cleans up DBpedia. 
ITSE, vol.8, 2011 (3)



On 23 Jan 2015, at 20:06, Dimitris Kontokostas 
kontokos...@informatik.uni-leipzig.de 
mailto:kontokos...@informatik.uni-leipzig.de wrote:


Dear all,

We are in the process of reorganizing the DBpedia ontology. Anyone 
who is interested to contribute to the future directions of the 
project is welcome to join.


The plan is as follows:
1) We have a dedicated session in the next DBpedia meeting in Dublin 
(Feb 9th) [1] where we will discuss the editing workflow, future 
directions and the formation of the DBpedia ontology committee [2].
2) The committee will be responsible to set the future plans  rules 
that will be announced shortly after the meeting.


Best regards,
Dimtiris

[1] wiki.dbpedia.org/meetings/Dublin2015 
http://wiki.dbpedia.org/meetings/Dublin2015

[2] http://mappings.dbpedia.org/index.php/DBpedia_Ontology_Committee

--
Dimitris Kontokostas
Department of Computer Science, University of Leipzig
Research Group: http://aksw.org http://aksw.org/
Homepage:http://aksw.org/DimitrisKontokostas


Dr. Harald Sack
Hasso-Plattner-Institut für Softwaresystemtechnik GmbH
Prof.-Dr.-Helmert-Str. 2-3
D-14482 Potsdam
Germany
Amtsgericht Potsdam, HRB 12184
Geschäftsführung: Prof. Dr. Christoph Meinel
Tel.: +49 (0)331-5509-527
Fax: +49 (0)331-5509-325
E-Mail: harald.s...@hpi.uni-potsdam.de 
mailto:harald.s...@hpi.uni-potsdam.de

http://www.hpi.uni-potsdam.de/meinel/team/sack.html






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Re: [Dbpedia-discussion] Advancing the DBpedia ontology

2015-02-03 Thread Harald Sack
Dear Dimitris,
I'm happy to hear that more work will be invested into a reorganization of the 
DBpedia ontology. As you might know, together with Magnus we have already 
invested some thoughts (and publications) into the topic with the focus on data 
cleansing based on an improved DBpedia ontology.[1,2]  Unfortunately, Magnus 
and I will not be able to participate live at the Dublin Meeting in Feb 9. 
Nevertheless, we would like to contribute. 

From our perspective we would like to apply the DBpedia ontology to detect 
inconsistencies and flaws in DBpedia facts. This should not only be possible in 
a retroactive way, but should take place much earlier. Besides the detection of 
inconsistencies during the mapping process or afterwards in the extracted data, 
this could already be possible right from the start when the user is changing 
the wikipedia infobox content (in the sense of type checking for domain/range, 
checking of class disjointness and further constraints, plausibility check for 
dates in connection with basic axioms to be defined, etc.). Another possibility 
would be a tool that makes inconsistencies/flaws in wikipedia data visible 
directly in the wikipedia interface, where users could either correct them or 
confirm facts that are originally in doubt. To achieve this, not only a 
formally sound and semantically enrichedDBpedia ontology including a set of 
basic axioms would be necessary, but also the applications and infrastructure 
that make use of the ontology.

Also the relation of the DBpedia ontology to other ontologies would be a rather 
interesting topic. This includes the already proposed schemata (schema.org, 
facebook OG, etc) as well as established ontologies (yago, umbel, etc...) where 
mapping to DBpedia entities already exist. Can we make use of these ontologies 
(and existing mappings) to complement DBpedia ontology in som (semi-)automated 
way?

Thanks and best regards,
  Harald

[1] G. Töpper, M. Knuth, and H. Sack: DBpedia ontology enrichment for 
inconsistency detection. i-SEMANTICS 2012
[2] J. Waitelonis, N. Ludwig, M. Knuth, H. Sack: Whoknows? - Evaluating Linked 
Data Heuristics with a Quiz that cleans up DBpedia. ITSE, vol.8, 2011 (3)


 On 23 Jan 2015, at 20:06, Dimitris Kontokostas 
 kontokos...@informatik.uni-leipzig.de wrote:
 
 Dear all,
 
 We are in the process of reorganizing the DBpedia ontology. Anyone who is 
 interested to contribute to the future directions of the project is welcome 
 to join.
 
 The plan is as follows:
 1) We have a dedicated session in the next DBpedia meeting in Dublin (Feb 
 9th) [1] where we will discuss the editing workflow, future directions and 
 the formation of the DBpedia ontology committee [2].
 2) The committee will be responsible to set the future plans  rules that 
 will be announced shortly after the meeting.
 
 Best regards,
 Dimtiris
 
 [1] wiki.dbpedia.org/meetings/Dublin2015
 [2] http://mappings.dbpedia.org/index.php/DBpedia_Ontology_Committee
 
 -- 
 Dimitris Kontokostas
 Department of Computer Science, University of Leipzig
 Research Group: http://aksw.org
 Homepage:http://aksw.org/DimitrisKontokostas

Dr. Harald Sack
Hasso-Plattner-Institut für Softwaresystemtechnik GmbH
Prof.-Dr.-Helmert-Str. 2-3
D-14482 Potsdam
Germany
Amtsgericht Potsdam, HRB 12184
Geschäftsführung: Prof. Dr. Christoph Meinel
Tel.: +49 (0)331-5509-527
Fax: +49 (0)331-5509-325
E-Mail: harald.s...@hpi.uni-potsdam.de
http://www.hpi.uni-potsdam.de/meinel/team/sack.html




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Re: [Dbpedia-discussion] DBpedia Live changesets stuck

2015-02-03 Thread Kingsley Idehen

On 2/3/15 5:24 AM, Paul Wilton wrote:

Hi Dimitris
The dbpedia live change sets have been stuck for some while at Nov 12th
Any updates on when this is going to start working again.

thanks
Paul


Dimitris,

I am increasingly confused as to why this is happening. Why is MySQL 
playing a pivot role in a workflow for which it is ultimately 
ill-suited, as demonstrated by the the current state of affairs?


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Re: [Dbpedia-discussion] [Fwd: Request for right]

2015-02-03 Thread Dimitris Kontokostas
Welcome  happy mappings :)

Cheers,
Dimtiris

On Mon, Feb 2, 2015 at 10:08 PM, anshu...@iitk.ac.in wrote:

 I want to create mappings so please activate my editor rights.
 Username: Anshulgo




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[Dbpedia-discussion] DBpedia Live changesets stuck

2015-02-03 Thread Paul Wilton
Hi Dimitris
The dbpedia live change sets have been stuck for some while at Nov 12th
Any updates on when this is going to start working again.

thanks
Paul
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Re: [Dbpedia-discussion] Top subjects, predicates and objects in DBpedia

2015-02-03 Thread Eetu Mäkelä
On Mon, Feb 02, 2015 at 03:04:22PM +, Jörn Hees wrote:
 I had a closer look at VoID again, but as i remembered it seems to me that 
 the available statistics properties are tailored to whole datasets and not 
 individual nodes within.
 I could maybe create an individual Linkset out of each individual subject, 
 each predicate and each object.
 Is this what you meant or were you referring to general stats about the whole 
 dataset?
 
 Is anyone aware of a rdf node statistics vocabulary?

I've extended VoID to handle more statistics (http://ldf.fi/void-ext)
and created a web tool to calculate these from SPARQL endpoints, as
well as visualize them at http://jiemakel.github.io/aether/ .

I've also run statistics from e.g. DBPedia 3.8 and 3.9 (using an
offline tool that is sadly not currently available). You can compare
the two at http://j.mp/1F1voBt .

 - Eetu

-- 
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Semantic Computing Research Group - http://www.seco.tkk.fi/
Department of Media Technology - http://www.media.tkk.fi/
Aalto University School of Science - http://sci.aalto.fi/


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Re: [Dbpedia-discussion] Advancing the DBpedia ontology

2015-02-03 Thread Dimitris Kontokostas
Thanks for the hint Hugh,

Actually this was quite easy to implement, we just needed a new mapping
http://mappings.dbpedia.org/index.php/Mapping_en:Distinguish
sample extraction:
http://mappings.dbpedia.org/server/mappings/en/extractionSamples/Mapping_en:Distinguish

It would be great if someone could pick up the rest of the related
templates found here
http://en.wikipedia.org/wiki/Template:Distinguish

Any other ideas for templates we do not currently extract is of course more
than welcome
These will be included in the next DBpedia release

Cheers,
Dimitris


On Tue, Feb 3, 2015 at 12:18 AM, Hugh Glaser h...@glasers.org wrote:

 Hi.
 Not sure how to ask this:
 It would be great if you could include the tags such as
 {{distinguish|James McEvoy}}
 which appears on
 http://en.wikipedia.org/wiki/James_McAvoy
 (I don’t see anything like that in the current dbpedia endpoint.)

 Perhaps as owl:differentFrom, or a dbpprop equivalent.
 Then I could harvest that stuff and put it in http://differentfrom.org
 (or it could usefully be published in a dump file, if you wanted to make my
 life easier :-) ).

 (I also just added my favourite differentFrom to Wikipedia: Engelbert
 Humperdinck :-) )

 Cheers
 Hugh

  On 23 Jan 2015, at 20:06, Dimitris Kontokostas 
 kontokos...@informatik.uni-leipzig.de wrote:
 
  Dear all,
 
  We are in the process of reorganizing the DBpedia ontology. Anyone who
 is interested to contribute to the future directions of the project is
 welcome to join.
 
  The plan is as follows:
  1) We have a dedicated session in the next DBpedia meeting in Dublin
 (Feb 9th) [1] where we will discuss the editing workflow, future directions
 and the formation of the DBpedia ontology committee [2].
  2) The committee will be responsible to set the future plans  rules
 that will be announced shortly after the meeting.
 
  Best regards,
  Dimtiris
 
  [1] wiki.dbpedia.org/meetings/Dublin2015
  [2] http://mappings.dbpedia.org/index.php/DBpedia_Ontology_Committee
 
  --
  Dimitris Kontokostas
  Department of Computer Science, University of Leipzig
  Research Group: http://aksw.org
  Homepage:http://aksw.org/DimitrisKontokostas

 --
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