Ciao Alessio,
maybe this can be of help (but probably you are already aware of it):
http://www.w3.org/TR/swbp-n-aryRelations/
Wikidata is also discussing something similar:
http://meta.wikimedia.org/wiki/Wikidata/Development/RDF
I remember reading blank nodes are evil, but unfortunately I do not have
enough experience to confirm/deny.
Andrea
2013/6/11 Alessio Palmero Aprosio <[email protected]>
> Ok, maybe I was not very clear in my previous mail: the problem was
> whether to use blank nodes or string concatenation (or a proposal for a
> better solution).
> We can discuss the format in a different mail thread :)
>
> Alessio
>
>
> Il 10/06/13 20:38, Paul A. Houle ha scritto:
>
> I am a fan of the SPARQL result set format whenever people want to
> express tuples of nodes:
>
> http://www.w3.org/TR/sparql11-results-csv-tsv/
>
> I think it’s more standard than Turtle, and it is as efficient as you’ll
> get unless you want a binary format.
>
> This file can be processed with simple streaming tools like awk or even
> passed into something like Pig. If you want to load the facts into the
> triple store you could just toss out the relevance rating or filter only
> facts where the relevance rating is 9 or above. If you wanted to produce
> the kind of RDF you suggest, you could do that too. You could also md5sum
> the triples and stuff the relevance data in a key-value store where it
> won’t add load to the triple store.
>
> *From:* Alessio Palmero Aprosio <[email protected]>
> *Sent:* Monday, June 10, 2013 11:15 AM
> *To:* dbpedia-discussion <[email protected]>
> *Subject:* [Dbpedia-discussion] Airpedia resource
>
> Dear DBpedia community,
> I am a PhD student from Fondazione Bruno Kessler [1] in Trento and I’m
> working with my team on Airpedia [2], which is a semantic resource based on
> machine learning techniques that aims to extend the coverage of DBpedia on
> classes (and, in a second step, on properties).
>
> A draft version of the resource is available on our website. we are
> currently working on releasing it to the Semantic Web Community, and
> investigating on the best RDF format to use.
>
> Actually, we use a simple CSV format. For example:
>
> #ID Class Relevance
> 140132 Eukaryote 10
> 140132 Animal 10
> 140132 Fish 10
> 140132 Species 10
> 140137 OlympicResult 8
> 140143 Eukaryote 10
> 140143 Amphibian 10
> 140143 Animal 10
> 140143 Species 10
>
> The ID column refers to a WikiData ID, and can be solved on the WikiData
> website on the link http://wikidata.org/wiki/Q<ID>; the Class column is
> the guessed DBpedia class; the Relevance column is our confidence about the
> class (from 7 to 10, being a k-NN voting, k=10). It is really easy for us
> to retrieve the DBpedia ID given the WikiData ID.
>
> Which is, in your opinion, the best way to represent this data in RDF,
> keeping in mind that we want to differentiate our triples from the original
> DBpedia ones and we want the relevance to be preserved?
>
> We have in mind the folowing candidate solutions.
> (“air” is our RDF namespace)
>
>
> *Solution 1** (string concatenation)*
>
> - ID air:type Class .
> - ID_Class air:confidence Relevance .
> - sameAses
>
> For example:
> 140132 Eukaryote 10
> 140132 Animal 10
> 140132 Fish 10
> 140132 Species 10
>
> becomes:
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#type> <http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Eukaryote><http://dbpedia.org/ontology/Eukaryote>.
> <http://airpedia.org/resource/140132_Eukaryote><http://airpedia.org/resource/140132_Eukaryote>
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#type> <http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Animal> <http://dbpedia.org/ontology/Animal>.
> <http://airpedia.org/resource/140132_Animal><http://airpedia.org/resource/140132_Animal>
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#type> <http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Fish> <http://dbpedia.org/ontology/Fish> .
> <http://airpedia.org/resource/140132_Fish><http://airpedia.org/resource/140132_Fish>
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#type> <http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Species><http://dbpedia.org/ontology/Species>.
> <http://airpedia.org/resource/140132_Species><http://airpedia.org/resource/140132_Species>
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>owl:sameAs
> <http://dbpedia.org/resource/Big_skate><http://dbpedia.org/resource/Big_skate>.
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>owl:sameAs
> <http://ca.dbpedia.org/resource/Raja_binoculata><http://ca.dbpedia.org/resource/Raja_binoculata>.
> ...
>
>
> *Solution 2** (blank nodes)*
>
> - ID air:isClassified bNode
> - bNode air:type Class
> - bNode air:confidence Relevance
> - sameAses
>
> For example:
> 140132 Eukaryote 10
> 140132 Animal 10
> 140132 Fish 10
> 140132 Species 10
>
> becomes:
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#isClassified><http://airpedia.org/vocab/01/#isClassified>_:1
> .
> _:1 <http://airpedia.org/vocab/01/#type><http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Eukaryote><http://dbpedia.org/ontology/Eukaryote>.
> _:1
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#isClassified><http://airpedia.org/vocab/01/#isClassified>_:2
> .
> _:2 <http://airpedia.org/vocab/01/#type><http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Fish> <http://dbpedia.org/ontology/Fish> .
> _:2
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#isClassified><http://airpedia.org/vocab/01/#isClassified>_:3
> .
> _:3 <http://airpedia.org/vocab/01/#type><http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Animal> <http://dbpedia.org/ontology/Animal>.
> _:3
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>
> <http://airpedia.org/vocab/01/#isClassified><http://airpedia.org/vocab/01/#isClassified>_:4
> .
> _:4 <http://airpedia.org/vocab/01/#type><http://airpedia.org/vocab/01/#type>
> <http://dbpedia.org/ontology/Species><http://dbpedia.org/ontology/Species>.
> _:4
> <http://airpedia.org/vocab/01/#confidence><http://airpedia.org/vocab/01/#confidence>“10”^^xsd:int
> .
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>owl:sameAs
> <http://dbpedia.org/resource/Big_skate><http://dbpedia.org/resource/Big_skate>.
> <http://airpedia.org/resource/140132><http://airpedia.org/resource/140132>owl:sameAs
> <http://ca.dbpedia.org/resource/Raja_binoculata><http://ca.dbpedia.org/resource/Raja_binoculata>.
> …
>
>
> While waiting for your suggestions, we finish the classification and make
> the CSV available on our website [2].
>
> Thank you!
> Best,
> Alessio
>
> [1] http://www.fbk.eu
> [2] http://www.airpedia.org
>
> ------------------------------
>
> ------------------------------------------------------------------------------
> How ServiceNow helps IT people transform IT departments:
> 1. A cloud service to automate IT design, transition and operations
> 2. Dashboards that offer high-level views of enterprise services
> 3. A single system of record for all IT processes
> http://p.sf.net/sfu/servicenow-d2d-j
>
> ------------------------------
> _______________________________________________
> Dbpedia-discussion mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>
>
>
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Windows:
>
> Build for Windows Store.
>
> http://p.sf.net/sfu/windows-dev2dev
> _______________________________________________
> Dbpedia-discussion mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
>
>
------------------------------------------------------------------------------
This SF.net email is sponsored by Windows:
Build for Windows Store.
http://p.sf.net/sfu/windows-dev2dev
_______________________________________________
Dbpedia-discussion mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/dbpedia-discussion
