Re: [Dbpedia-ontology] [Dbpedia-discussion] Advancing the DBpedia ontology

Vladimir,

I am more than happy to work the ML problem with you.  For your example of the dichotomy with the ___domain and range of "mother" and queen Victoria being the "mother", this begs for contextual approach to that concept....

Aaron

> On Feb 18, 2015, at 08:03, Vladimir Alexiev <vladimir.alexiev@ontotext.com> wrote:
> 
> Hi everyone!
> 
> My presentations from the Dublin meeting are at
> 
> - http://VladimirAlexiev.github.io/pres/20150209-dbpedia/add-mapping-long.html
> An example of adding a mapping, while making a couple props along the way and reporting a couple of problems.
> 
> - http://VladimirAlexiev.github.io/pres/20150209-dbpedia/dbpedia-problems-long.html
> Provides a wider perspective that data problems are not only due to the ontology, but many other areas.
> 3. Mapping Language Issues
> 4. Mapping Server Deficiencies
> 5. Mapping Wiki Deficiencies
> 6. Mapping Issues
> 7. Extraction Framework Issues
> 8. External Mapping Problems
> 9. Ontology Problems
> Almost all of these are also reported in the two trackers described in sec.2
> 
>> Heiko Paulheim <heiko@informatik.uni-mannheim.de> wrote:
>> 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.
> 
> Sounds very interesting!
> 
> I've been quite active in the last couple of months, but I've been pecking at random here and there.
> More systematic approaches are definitely needed, 
> as soon as they are not limited to a theoretical experiment, or a one-time effort that's quickly closed down.
> 
> I've observed many error patterns, and if people smarter than me can devise ways to leverage and amplify these observations using algorithmic or ML approaches, that could create fast progress. I give some examples of the "Need for Research" of specific problems: 
> http://VladimirAlexiev.github.io/pres/20150209-dbpedia/dbpedia-problems-long.html#sec-6-5 
> and next section.
> 
>> Harald Sack:
>> 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
> 
> Sounds very promising! If I can help somehow with "manual ontological & wiki labor", let me know.
> Data vs ontology validation can provide
> - mapping defect lists
> - useful hints that the Extraction can use. 
>  The most important feature would be Use Domain & Range to Guide Extraction
>   http://vladimiralexiev.github.io/pres/20150209-dbpedia/dbpedia-problems-long.html#sec-7-4
> 
>> 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
> 
> I'm doubtful of the utility of "error lists" to Wikipedia (or it needs to be done with skill and tact):
> 1. The mapping wiki adopts an Object vs DataProp Dichotomy (uses owl:ObjectProperty and owl:DatatypeProperty and never rdf:Property).
>  But MANY Wikipedia fields include both links and text, and in many cases BOTH are useful 
>  http://vladimiralexiev.github.io/pres/20150209-dbpedia/dbpedia-problems-long.html#sec-3-2
> 2. At the end of the day, Wikipedia is highly-crafted text, so telling Wikipedia editors that they can't write something, will not sit well with them.
> 
> For example, who should resolve this contradiction:
>  DBO: dbo:parent rdfs:range dbo:Person
>  Wikipedia: | mother = [[Queen Victoria]] of [[England]]
> I think the Extraction Framework (by filtering out the link that is not Person), not Wikipedians
> 
>> 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.
> 
> But Wikipedia is moving towards using Wikidata props in template fields: through {{#property}}.
> 
> Cheers!
> 
> 
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Received on Wednesday, 18 February 2015 13:43:37 UTC