[NLP2RDF] NIF ontology: broken links

Wed Feb 6 13:50:10 CET 2019

Hi Antonin,

also this:

http://lider-project.eu/lider-project.eu/indexc299.html?q=guidelines

section 3 of http://www.lider-project.eu/sites/default/files/D3.1.2-v2.0.pdf

Sebastian

On 06.02.19 09:48, Antonin Delpeuch (lists) wrote:
> Hi Sebastian!
>
> Great, that tooling looks very useful indeed! I am neither familiar with
> SHACL nor confident with NIF so far so I am probably not best placed to
> rewrite NIF in SHACL, but that does seem like a worthwhile project.
>
> Concerning human-readable documentation, I have found this:
> https://github.com/dice-group/gerbil/wiki/How-to-generate-a-NIF-dataset
> http://brown.nlp2rdf.org/
> That's what is closest to what I need, so I will try to improve this as
> I find answers to my questions.
>
> Best,
> Antonin
>
> On 2/5/19 9:14 PM, Sebastian Hellmann wrote:
>> Hi Antonin,
>>
>> On 05.02.19 16:02, Antonin Delpeuch (lists) wrote:
>>> Hi Sebastian,
>>>
>>> Great, thanks! Beyond the description of the ontology, it would be quite
>>> useful to have a more explanatory description of NIF as a file format
>>> for NERD datasets. The ontology only loosely describes the format: for
>>> instance, it is not clear to me which statements are required, which
>>> ones are optional, which ones can have multiple values, and so on.
>> you need to cut me some slack here. We really tried to do that back then
>> with the validation model in OWL. However, OWL was not well-suited, so
>> my PhD student Dimitris Kontokostas made the W3C standard SHACL to
>> directly address this issue:
>>
>> * *NLP data cleansing based on Linguistic Ontology constraints
>> <http://jens-lehmann.org/files/2014/eswc_rdfunit_nlp.pdf> /by/ Dimitris
>> Kontokostas, Martin Brümmer, Sebastian Hellmann, Jens Lehmann, and
>> Lazaros Ioannidis * /in/ Proc. of the Extended Semantic Web Conference 2014
>>
>> * https://www.w3.org/TR/shacl/
>>
>>> Moreover, the NIF format also uses predicates from other namespaces
>>> which are not described there, so that makes it even harder to
>>> understand, I think.
>> This is also a common problem, which can be addressed by SHACL as well.
>>
>> If I were to do NIF again, I would only use SHACL and RDFS and not OWL
>> at all. SHACL is a much better modelling language and you can scope over
>> external classes.
>>
>>> Having such a document (with examples) would really encourage people
>>> from outside the semantic web community (such as NLP researchers not
>>> familiar with these terminologies) to embrace the format, I think.
>> RDFUnit (https://github.com/AKSW/RDFUnit) can be hosted as a webservices
>> with SHACL, so you will get a free validator, see e.g. here:
>>
>> http://databus.dbpedia.org:8080/shacl/validate?d=http://kurzum.net/webid.ttl&A&s=https://raw.githubusercontent.com/dbpedia/webid/master/voc/webid-shacl.ttl
>>
>> If you have the time, I think it would be good to rewrite NIF in SHACL
>> and then publish all versions on the Databus.  Things will get much
>> easier for everybody.
>>
>>
>> All the best,
>>
>> Sebastian
>>
>>
>>
>>
>>> Best,
>>> Antonin
>>>
>>> On 2/5/19 2:44 PM, hellmann at informatik.uni-leipzig.de wrote:
>>>> Hi Antonin,
>>>>
>>>> The turtle file is here
>>>> http://persistence.uni-leipzig.org/nlp2rdf/ontologies/nif-core/nif-core.ttl
>>>>
>>>> There is a broken internal redirect pending to be fixed.
>>>>
>>>> 2.1 is here https://github.com/NLP2RDF/ontologies
>>>>
>>>>
>>>> Over the years it became clear that publishing ontologies like this is
>>>> very unpractical. We are working on https://databus.dbpedia.org .
>>>>
>>>> When it is ready, I will migrate the ontology there. It like maven
>>>> central for data, so you can build your app on the right version...
>>>>
>>>> Sebastian
>>>>
>>>>
>>>>
>>>> On February 5, 2019 2:32:29 PM GMT+01:00, "Antonin Delpeuch (lists)"
>>>> <lists at antonin.delpeuch.eu> wrote:
>>>>
>>>>      Hi,
>>>>
>>>>      I was looking for the definition of the NIF format. It seems that it
>>>>      used to be available at:
>>>>      http://persistence.uni-leipzig.org/nlp2rdf/ontologies/nif-core#
>>>>
>>>>      This link currently gives an HTTP 403 error for me. I found it in the
>>>>      "Integrating NLP using Linked Data paper":
>>>>      http://svn.aksw.org/papers/2013/ISWC_NIF/public.pdf
>>>>      Given that this link appears in a published paper, I think it is very
>>>>      important that there is an effort to maintain it (otherwise the
>>>>      "persistence" in the domain name is not really deserved).
>>>>
>>>>      The same link is also used at:
>>>>      http://persistence.uni-leipzig.org/nlp2rdf/
>>>>
>>>>      Thanks to Wikidata (https://www.wikidata.org/wiki/Q31794099) I was able
>>>>      to find
>>>>      http://persistence.uni-leipzig.org/nlp2rdf/ontologies/nif-core/nif-core.html,
>>>>      which seems to be about NIF 2.0, what about NIF 2.1?
>>>>
>>>>      Best regards,
>>>>      Antonin Delpeuch
>>>>      ------------------------------------------------------------------------
>>>>      NLP2RDF mailing list
>>>>      NLP2RDF at lists.informatik.uni-leipzig.de
>>>>      http://lists.informatik.uni-leipzig.de/mailman/listinfo/nlp2rdf
>>>>
>>>>
>>>> -- 
>>>> Sent from my Android device with K-9 Mail. Please excuse my brevity.
>> -- 
>> All the best,
>> Sebastian Hellmann
>>
>> Director of Knowledge Integration and Linked Data Technologies (KILT)
>> Competence Center
>> at the Institute for Applied Informatics (InfAI) at Leipzig University
>> Executive Director of the DBpedia Association
>> Projects: http://dbpedia.org, http://nlp2rdf.org,
>> http://linguistics.okfn.org, https://www.w3.org/community/ld4lt
>> <http://www.w3.org/community/ld4lt>
>> Homepage: http://aksw.org/SebastianHellmann
>> Research Group: http://aksw.org
-- 
All the best,
Sebastian Hellmann

Director of Knowledge Integration and Linked Data Technologies (KILT) 
Competence Center
at the Institute for Applied Informatics (InfAI) at Leipzig University
Executive Director of the DBpedia Association
Projects: http://dbpedia.org, http://nlp2rdf.org, 
http://linguistics.okfn.org, https://www.w3.org/community/ld4lt 
<http://www.w3.org/community/ld4lt>
Homepage: http://aksw.org/SebastianHellmann
Research Group: http://aksw.org
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