Is there a way for reconciling data against SPARQL endpoints (e.g., DBpedia, databnf, etc).?

Support and Helpdesk
1

I would like to reconcile my data with data exposed through a sparql endpoint service (databnf). I tryed the grefine-rdf-extension but doesn’t seem to work. I use the 3.6.2 of OpenRefine and 1.4.0 of grefine-rdf-extension
I’ve installed the extension and it’s displayed on the OpenRefine interface, so I suppose the installation worked well, but the connection to the sparql endpoint doesn’t seem to work. I have the following message when I try to access the service from the reconciliation window.

HTTP ERROR 404 Not Found

URI: /extension/rdf-extension/services/databnf
STATUS: 404
MESSAGE: Not Found
SERVLET: refine

Did somebody managed to make this extension work or have another solution for reconciling data against SPARQL endpoints?
Thank for any hint

2

Hi and welcome!

I’ve just tried it and it works for me.

Can you confirm how you are adding the SPARQL endpoint as a reconciliation service? I did the following:

  • Click the RDF extension menu
  • Choose “Add reconcilation service”
  • Choose “Based on SPARQL endpoint”
    Fill out details:
  1. Name: BNF
  2. Endpoint URL: Éditeur SPARQL de data.bnf.fr
  3. Graph URI: blank
  4. Type: Generic SPARQL
  5. Label properties: rdfs:label

Once that’s done:

  • Reconcile → Start Reconciling (from column menu)
  • Choose “BNF”
  • Choose “Reconcile against no particular type”
  • Click “Start reconciling”

On a single cell containing the string “Mitterand” I got back three suggested matches. In the console I can see the SPARQL request is returning :
{ "q0": { "result": [ { "id": "http://data.bnf.fr/temp-work/31f29276c592cff6dde6b84f9be72066/#about", "name": "François Mitterand ou \"Cet homme est dangereux\"", "score": 0.1914893388748169, "match": false, "type": [ { "id": "http://rdvocab.info/uri/schema/FRBRentitiesRDA/Work", "name": "http://rdvocab.info/uri/schema/FRBRentitiesRDA/Work" }, { "id": "http://rdaregistry.info/Elements/c/#C10001", "name": "http://rdaregistry.info/Elements/c/#C10001" } ] }, { "id": "http://data.bnf.fr/temp-work/b63432052972f46efa6c0ca329f49376/#about", "name": "\"La force injuste de la loi\", François Mitterand", "score": 0.1875, "match": false, "type": [ { "id": "http://rdvocab.info/uri/schema/FRBRentitiesRDA/Work", "name": "http://rdvocab.info/uri/schema/FRBRentitiesRDA/Work" }, { "id": "http://rdaregistry.info/Elements/c/#C10001", "name": "http://rdaregistry.info/Elements/c/#C10001" } ] }, { "id": "http://data.bnf.fr/temp-work/f2ff72771c447a8768ddffa4486be6e3/#about", "name": "Le disciple ou Les dix leçons que Jospin apprit de Mitterand", "score": 0.1499999761581421, "match": false, "type": [ { "id": "http://rdvocab.info/uri/schema/FRBRentitiesRDA/Work", "name": "http://rdvocab.info/uri/schema/FRBRentitiesRDA/Work" }, { "id": "http://rdaregistry.info/Elements/c/#C10001", "name": "http://rdaregistry.info/Elements/c/#C10001" } ] } ] } }

1 Like
3

Hi ostephens,
Thanks so much for trying.
I think I followed the same steps.
Here is a screen shot:

Capture d’écran 2022-11-22 à 17.28.31
Capture d’écran 2022-11-22 à 17.28.311180×908 70.8 KB

the result apears on the next window (french interface, so the message is in French, hope it’s ok) with the following message : “Désolé, aucun type n’a pu être identifié pour vos données. Merci de l’indiquer ci-dessous.” ("Sorry, no type could be identified for your data. Please indicate this below.),

and when I click on “Accès au service de l’API” (up-right corner), I land on the 404 error message I cited above.

Certanly, I missed something, but I don’t know where to look.

4

Does this message appear when you try to do the reconciliation? If so, are you selecting a specific type to be used for the reconciliation?

5

yes, you’re right. When choosing the type, we must activate the checkbox “Réconcilier sans type particulier”. Now the service works.
thank you so much.

1 Like