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Re: Release of SAGE 1.0: a stable, responsive and unrestricted SPARQL query server

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 7 Sep 2018 16:58:50 -0400
To: public-lod@w3.org
Message-ID: <1c3b578e-fdb6-9c4e-541b-cb02407dfec2@openlinksw.com>
On 9/7/18 2:54 PM, Paul Houle wrote:
> I will tell you how they make that claim,  and it is because they can
> persist the status of an incomplete query and send it back to the
> sender as a backstop when the system decides it doesn't have capacity
> to work on that query at the moment.  It is easier for them to do that
> because it is a read-only database.

How does that satisfy the unproven claim they make against Virtuoso, an
engine that actually has an "Anytime Query" capability.

I also requested a SPARQL Endpoint URI (by that I don't mean a Web Page
with canned bindings to datasets) for experimentation, Ideally one
that's accessible via SPARQL-FED.

>
> The way you might break it is that if the query state is large,  then
> the process of handling it might be too much.
>
> People are doing interesting things with "reactive systems" that
> incorporate load shedding mechanisms so that they stay responsive even
> under overload.

No news here.

I am still unconvinced of the speculative claim the make about their
Virtuoso comparisons. Even better, access to a live SPARQL endpoint
would benefit all :)


Kingsley
>
> ------ Original Message ------
> From: "Kingsley Idehen" <kidehen@openlinksw.com
> <mailto:kidehen@openlinksw.com>>
> To: public-lod@w3.org <mailto:public-lod@w3.org>
> Sent: 9/7/2018 10:44:08 AM
> Subject: Re: Release of SAGE 1.0: a stable, responsive and
> unrestricted SPARQL query server
>
>> On 9/7/18 9:44 AM, Pascal Molli wrote:
>>>
>>> Dear Semantic Web, Linked Data Community,
>>>
>>>
>>> We are proud to announce the release of SAGE 1.0, a stable,
>>> responsive and unrestricted SPARQL query server [1]. The software
>>> and an online demo are freely available at:
>>>
>>>
>>> http://sage.univ-nantes.fr/
>>>
>>
>> Hi Pascal,
>>
>> Congrats!
>>
>>>
>>> Compared to public SPARQL endpoints, SAGE is stable and responsive
>>> without quotas. 
>>>
>>
>> What does that mean?
>>
>>> SAGE is able to deliver complete results for any SPARQL query. The
>>> Sage engine outperforms a Virtuoso server in term of execution time
>>> when the server load increases.
>>>
>>
>> What does that mean?
>>
>> How can I or anyone else verify this claim?
>>
>> What is your live SPARQL Query Service endpoint URI?
>>
>>>
>>> Compared to the Linked Data Fragment approach, SAGE outperforms a
>>> TPF server in term of execution time, communication costs and data
>>> transfers by several order of magnitude by processing BGP on the
>>> server side.
>>>
>>>
>>> Experimental results and more details are available in [1].
>>>
>>
>> Do you offer a live SPARQL endpoint?  I am eager to test your claims.
>>
>>>
>>> We encourage you to run complex queries on RDF datasets available on
>>> the demo server and check performance (many presets queries are
>>> available).
>>>
>>>
>>> We appreciate your feedback/comments/questions to be sent to our
>>> mailing list [2] or our issue tracker on github [3].
>>>
>>>
>>> On behalf of the Sage team,
>>>
>>> ---
>>>
>>> Pascal Molli, Hala-Skaf-Molli, Thomas Minier - GDD Team
>>> <https://sites.google.com/site/gddlina/home>, LS2N
>>> <https://www.ls2n.fr/?lang=en>, University of Nantes
>>> <http://www.univ-nantes.fr/>.
>>>
>>>
>>> [1] Thomas Minier, Hala Skaf-Molli, Pascal Molli. SaGe: Preemptive
>>> Query Execution for High Data Availability on the Web. 2018.
>>> https://hal.archives-ouvertes.fr/hal-01806486v1
>>>
>>>
>>> [2] sage@univ-nantes.fr <mailto:sage@univ-nantes.fr>
>>>
>>>
>>> [3] https://github.com/sage-org/sage-engine/issues
>>>
>>>
>>
>> -- 
>> Regards,
>>
>> Kingsley Idehen	      
>> Founder & CEO 
>> OpenLink Software   (Home Page: http://www.openlinksw.com)
>>
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>>
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>>

-- 
Regards,

Kingsley Idehen	      
Founder & CEO 
OpenLink Software   (Home Page: http://www.openlinksw.com)

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Received on Friday, 7 September 2018 20:59:17 UTC

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