Open invitation for contributions to an up-to-date list of query service endpoints that underlie the massive LODCloud KnowledgeGraph

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1

Agility
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Goal

An up-to-date, crowd-sourced list of query service endpoints that underlie the massive LOD Cloud Knowledge Graph.

Here is a Google Spreadsheet that contains a list of SPARQL Query Service endpoints. Please feel free to contribute any endpoints not on the list!

Note

The LOD Cloud is a live demonstration of several capabilities offered by RDF-compliant Graph Database Management Systems (a sub-genre of DBMS), particularly –

  • Ad-hoc queries – varying complexity from any combination of human or bots
  • Performance, Scalability, and Availability
  • Entity Relationship Graph Exploration – before and after query solution production

Benefits

  • Existing HTTP, ODBC, JDBC, ADOdotNET, and OLE DB compliant apps and services all have access to this massive Knowledge Graph

  • Richer knowledge can be derived by combining local data with master data from this Knowledge Graph

LOD
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3

Hi,
I have a list of 539 SPARQL endpoints and the number of triples in a Google spreadsheet.

Please let me know if you want to add this info.

Cheers,

André Valdestilhas

4

That would be a great addition!

Please put them into the “Raw Dump” tab, or create a new tab if your column structure is very different.

5

I have requested permission to edit the document, but in any case, you can find my google spreadsheet here in this link:

6

I’ve just created a new tab to avoid duplicate info.

7

Do you know how many of these endpoints are actually live? Ideally, its best to add a column indicating the state of these endpoints.

8

I’m not checking every day, but they were alive and working in the December 8th 2018. I’m actually using those endpoints in my last work (https://www.researchgate.net/profile/Andre_Valdestilhas/publication/335620155_Towards_More_Complete_Resultset_Retrieval_from_Large_Heterogeneous_RDF_Data_Sources/links/5d70d9b2a6fdcc9961afa91d/Towards-More-Complete-Resultset-Retrieval-from-Large-Heterogeneous-RDF-Data-Sources.pdf)

9

I have just asked write access to this spreadsheet since I’m maintaining a number of SPARQL endpoints. I’m all for crowd-sourcing but I find this quite limited if by default the spreadsheet is read only.

Note that similar crowd-sourcing efforts are run in parallel by specific communities. For example, see the spreadsheet from the GLAM community making an inventory of the SPARQL endpoints loading data following the CIDOC-CRM ontology, at https://docs.google.com/spreadsheets/d/1x15RRKpYLjXjz0hBLxHXOf7alBY2k4opU2ZqBaRjM2I/edit#gid=0

10

Access granted.
The spreadsheet is write-by-request, but my mail filters aren’t quite optimal re catching requests e.g., yours.

Anyway, hopefully this is fixed now :slight_smile: