Re: SPARQL 1.2 Extended Aggregate Functions

+1 for median, mean and so on. More generally it would be great to be able
to define and register UDF!
this would include also probably the need for a standard way/syntax to
provide parameter values (thus in a way the chance to use some SPARQL query
as a sort of template, for example in order to produce CSV by request)

IMHO cluster analysis is something on top on that level, and once we had a
standard way to register user-defined-functions, we could define specific
functions to act as a facade over naive or complex ML process.
And we could also move complex logic to a SERVICE counterpart maybe?



Il giorno mer 3 apr 2019 alle ore 00:45 Marco Neumann <
marco.neumann@gmail.com> ha scritto:

> I'd like to see a few more aggregate functions in the spec. In
> particular for statistical evaluation .
>
> For example I have noticed that simple functions like median are
> missing from SPARQL 1.1
>
> In extension it might be attractive to add basic cluster analysis
> features here as well.
>
> It might be a good idea to take a look at current implementations and
> compare features for complexity and performance for inclusion.
>
> Best,
> Marco
>
>
> --
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> ---
> Marco Neumann
> KONA
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