core and SPARQL, the more obscure ones are
> maybe slow. But if they are comparing across databases, maybe they
> went for an implemented subset.
>
> Where are the shapes they used?
>
> Andy
>
> "18 GB of heap memory" ... on a 16G machine. Hmm.
>
>
&g
Hi all,
as usual when I see something regarding Jena in recent publications:
"Benchmark for Performance Evaluation of SHACL Implementations in Graph
Databases" [1]
As the title indicates, it's a benchmark about SHACL validation
performance. The benchmark comprise 58 SHACL shapes tested on I gues
For OWL this is more complex than you might think - I know the
(brilliant) work of Matthew Horridge, basically it was his PhD computing
minimal sets of OWL axioms from which a given axiom can be entailed by
an OWL reasoner.
For Jena, we have [1]
[1] https://jena.apache.org/documentation/inferen
Well, I read about this some time ago and was wondering how many people
are really aware of the fact that no more security updates will be
delivered 6 month after the release of a new version. Most people in our
group are still working on Java 8, if not necessary probably nobody here
will upgrade u
The Hadoop libs, even the latest major release version 3.0.0, are still
based on Java 7 resp. Java 8, see [1]
Thus, it could be a blocker.
Cheers,
Lorenz
[1]
http://central.maven.org/maven2/org/apache/hadoop/hadoop-annotations/3.0.0/hadoop-annotations-3.0.0.pom
On 02.02.2018 19:02, Andy Sea
question:
Given that you'd have been decided for one of the proposals, how would
the whole process continue? I mean, how does it work in revising the
specs? SPARQL 1.2 or is it possible to modify an existing spec? I guess
this would be strange right, because somebody would have to tell
dev
Hi all,
just if somebody is interested in reading about the different behavior
of triple stores when evaluating FILTER EXISTS. [1]
Not sure how often this feature is used nowadays, but anyways
interesting to know ( though I'd never write the SPARQL query as given
in the example of the paper, seem
I don't get the meaning of this number:
# issues: 405,700
What is a single issue in your context?
On 16.11.2017 11:15, Γεώργιος Δίγκας wrote:
> Dear All,
>
> First of all I would like to thank you very much for your fast response.
> I have created a spreadsheet
> (https://docs.google.com/sprea
> https://west.uni-koblenz.de/sites/default/files/studying/theses-files/bachelorarbeit-adrian-skubella-benchmarks-for-sparql-property-paths.pdf
>
>
>
> On Thu, Oct 19, 2017 at 10:54 AM, Lorenz B.
> wrote:
>> For me this is really bad practice. It also looks like they di
th evaluation could improved to stream in more cases (that's why
>> LIMIT didn't help), but 1195 explains the slowness
>> and memory.
>>
>> Andy
>>
>> On 17/10/17 07:58, Lorenz B. wrote:
>>> Hi,
>>>
>>> I just walked thro
Hi,
I just walked through the papers for the upcoming ISWC conference and
found a paper about benchmarking of SPARQL property paths [1] .
Not sure if this is relevant, but it looks like Jena has some issues
with different types of queries using the property path. For example,
SELECT ?o WHERE {A
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