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Re: LODCloud SPARQL Endpoints Spreadsheet

From: Martynas Jusevičius <martynas@atomgraph.com>
Date: Tue, 17 Mar 2020 16:19:07 +0100
Message-ID: <CAE35VmwqK1aqEXUaLS80OJoLSrVkquNYqhLdQggF+C7M=f4t0w@mail.gmail.com>
To: Kingsley Idehen <kidehen@openlinksw.com>
Cc: public-lod@w3.org
Hi,

I think link checking is where the HTTP-in-RDF vocabulary can be useful:
https://www.w3.org/TR/HTTP-in-RDF10/

With response metadata in a triplestore, status codes could be easily
aggregated with SPARQL.

We have developed a simple prototype of an HTTP client (a la curl) which
emits HTTP-in-RDF metadata:
https://github.com/AtomGraph/HTTP-in-RDF


Martynas
atomgraph.com

On Tue, 17 Mar 2020 at 16.07, Kingsley Idehen <kidehen@openlinksw.com>
wrote:

> On 3/17/20 10:12 AM, Claus Stadler wrote:
>
> Hi all,
>
>
> Last week I got a list of endpoints from one colleague and it turned out
> that many were dead so I hacked up a little service check [1] with
> Github-Actions (and our own sparql-integrate tool[2]) . And then another
> colleague told my of the rather recent effort that happened here.
>
>
> Openlink's LODCloud_SPARQL_Endpoints.ttl [3] looks looks very good!
>
>
> What I can contribute is a proof-of-concept of a completely self-contained
> SPARQL-based service monitoring setup [1] where Github does all the work of
> service checking, where everyone can clone the repo, adjust the queries and
> get whatever RDF out what they use case(s) demand. Right now I only added
> online/offline checking, but in principle one can also just query the
> endpoints for features and emit service descriptions or query for dataset
> metrics and emit void.
>
>
> Of course there are resource limitations, Github only allows 1000 requests
> per hour, the workflow time is limited, and the virtual instances only have
> 2 CPUs.
>
>
> Cheers,
>
> Claus
>
>
> [1]
> https://github.com/SmartDataAnalytics/lodservatory/blob/master/latest-status.ttl
>
> [2] https://github.com/SmartDataAnalytics/SparqlIntegrate
>
> [3]
> https://github.com/OpenLinkSoftware/general-turtle-doc-collection/blob/master/LODCloud_SPARQL_Endpoints.ttl
>
>
> Hi Claus,
>
>
> Great effort!
>
>
> Kingsley
>
>
> On 24.12.19 16:12, Kingsley Idehen wrote:
>
> On 12/23/19 11:55 AM, Kingsley Idehen wrote:
>
> On 12/23/19 5:01 AM, Michel Dumontier wrote:
>
> Hi Kingsley,
>  Is it correct that we should continue to make changes to the spreadsheet,
> or should we do do a pull request against the turtle file?
>
>
> Whichever works best for you :)
>
>
> If the former, how often will you update the turtle document and the
> endpoint?
>
>
> We will update it frequently in response to edit contributions to either
> data source.
>
> Kingsley
>
>
> m.
>
> On Fri, Dec 20, 2019 at 10:36 PM Kingsley Idehen <kidehen@openlinksw.com>
> wrote:
>
>> On 12/18/19 2:31 PM, Kingsley Idehen wrote:
>>
>> On 9/17/19 6:10 PM, Kingsley Idehen wrote:
>>
>> Hi Everyone,
>>
>> As part of the LODCloud effort (starting in 2007), a number of SPARQL
>> Endpoints emerged around the initial SPARQL endpoint provided by DBpedia.
>> Today, that cloud has grown into the largest Knowledge Graph on earth (by
>> far!) and continues to drive new frontiers related to Artificial
>> Intelligence and Machine Learning.
>>
>> Having established itself as the preeminent global Knowledge Graph on
>> earth, it is extremely important that we maintain an active list of SPARQL
>> endpoints using practices that scale. Thus, we are providing a shared
>> Google Spreadsheet for crowd-sourcing the maintenance of SPARQL endpoints
>> that make up this important Knowledge Graph.
>>
>> Please contribute your SPARQL endpoint(s) to the spreadsheet.
>>
>> *Links*
>>
>>    - SPARQL Endpoint Google Spreadsheet 1
>>    <https://community.openlinksw.com/t/open-invitation-for-contributions-to-an-up-to-date-list-of-query-service-endpoints-that-underlie-the-massive-lodcloud-knowledgegraph/1202>
>>    - What is the LODCloud, and why is it important?
>>    <https://medium.com/virtuoso-blog/what-is-the-linked-open-data-cloud-and-why-is-it-important-1901a7cb7b1f>
>>
>>
>> Season's Greetings to all,
>>
>> This is a final call regarding contributions to the SPARQL Query Service
>> Endpoint Description effort that we are seeding via a shared Google
>> Spreadsheet [1].
>>
>> The goal is to produce an RDF-Turtle document that describes these
>> endpoints using terms from the SPARQL Service Description [2] and VoID [3]
>> Ontologies. Naturally, the document will also be published using Linked
>> Data principles.
>>
>>
>> [1]
>> https://docs.google.com/spreadsheets/d/15AXnxMgKyCvLPil_QeGC0DiXOP-Hu8Ln97fZ683ZQF0/edit#gid=0
>>
>> [2] https://www.w3.org/ns/sparql-service-description
>>
>> [3] http://rdfs.org/ns/void#
>>
>>
>> We've published an RDF-Turtle document that describes a collection of
>> SPARQL Query Services Endpoints to our Github repository [1]. Naturally,
>> content of said document has been deployed using Linked Data principles [2]
>> and sponged by our URIBurner Service [3].
>>
>> Enjoy!
>>
>> Links:
>>
>> [1]
>> https://github.com/OpenLinkSoftware/general-turtle-doc-collection/blob/master/LODCloud_SPARQL_Endpoints.ttl
>> -- Github
>>
>> [2] http://data.openlinksw.com/oplweb/sparql-endpoint134#this -- Example
>> URI
>>
>> [3]
>> http://linkeddata.uriburner.com/describe/?url=http%3A%2F%2Fwww.openlinksw.com%2Fdata%2Fturtle%2Foplweb%2FLODCloud_SPARQL_Endpoints.ttl&distinct=1
>> -- About the SPARQL Query Service Endpoints
>>
>> --
>> Regards,
>>
>> Kingsley Idehen	
>> Founder & CEO
>> OpenLink Software
>> Home Page: http://www.openlinksw.com
>> Community Support: https://community.openlinksw.com
>> Weblogs (Blogs):
>> Company Blog: https://medium.com/openlink-software-blog
>> Virtuoso Blog: https://medium.com/virtuoso-blog
>> Data Access Drivers Blog: https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers
>>
>> Personal Weblogs (Blogs):
>> Medium Blog: https://medium.com/@kidehen
>> Legacy Blogs: http://www.openlinksw.com/blog/~kidehen/
>>               http://kidehen.blogspot.com
>>
>> Profile Pages:
>> Pinterest: https://www.pinterest.com/kidehen/
>> Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
>> Twitter: https://twitter.com/kidehen
>> Google+: https://plus.google.com/+KingsleyIdehen/about
>> LinkedIn: http://www.linkedin.com/in/kidehen
>>
>> Web Identities (WebID):
>> Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
>>         : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
>>
>>
>
> --
> Michel Dumontier
> Distinguished Professor of Data Science
> Maastricht University
> http://dumontierlab.com
>
>
>
> Hi Everyone,
>
> The URI of the Github repo associated with the SPARQL Query Service
> endpoint descriptions has been changed [1]. Thus, use the new repository
> for branch forks and pull requests.
>
> [1] https://github.com/OpenLinkSoftware/lod-cloud
>
> Happy Holidays!
>
> --
> Regards,
>
> Kingsley Idehen	
> Founder & CEO
> OpenLink Software
> Home Page: http://www.openlinksw.com
> Community Support: https://community.openlinksw.com
> Weblogs (Blogs):
> Company Blog: https://medium.com/openlink-software-blog
> Virtuoso Blog: https://medium.com/virtuoso-blog
> Data Access Drivers Blog: https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers
>
> Personal Weblogs (Blogs):
> Medium Blog: https://medium.com/@kidehen
> Legacy Blogs: http://www.openlinksw.com/blog/~kidehen/
>               http://kidehen.blogspot.com
>
> Profile Pages:
> Pinterest: https://www.pinterest.com/kidehen/
> Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
> Twitter: https://twitter.com/kidehen
> Google+: https://plus.google.com/+KingsleyIdehen/about
> LinkedIn: http://www.linkedin.com/in/kidehen
>
> Web Identities (WebID):
> Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
>         : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
>
> --
> Dipl. Inf. Claus Stadler
> Department of Computer Science, University of Leipzig
> Research Group: http://aksw.org/
> Workpage & WebID: http://aksw.org/ClausStadler
> Phone: +49 341 97-32260
>
>
> --
> Regards,
>
> Kingsley Idehen	
> Founder & CEO
> OpenLink Software
> Home Page: http://www.openlinksw.com
> Community Support: https://community.openlinksw.com
> Weblogs (Blogs):
> Company Blog: https://medium.com/openlink-software-blog
> Virtuoso Blog: https://medium.com/virtuoso-blog
> Data Access Drivers Blog: https://medium.com/openlink-odbc-jdbc-ado-net-data-access-drivers
>
> Personal Weblogs (Blogs):
> Medium Blog: https://medium.com/@kidehen
> Legacy Blogs: http://www.openlinksw.com/blog/~kidehen/
>               http://kidehen.blogspot.com
>
> Profile Pages:
> Pinterest: https://www.pinterest.com/kidehen/
> Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen
> Twitter: https://twitter.com/kidehen
> Google+: https://plus.google.com/+KingsleyIdehen/about
> LinkedIn: http://www.linkedin.com/in/kidehen
>
> Web Identities (WebID):
> Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i
>         : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
>
>
Received on Tuesday, 17 March 2020 15:19:34 UTC

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