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From Deron Eriksson <>
Subject Re: [PROPOSAL] R4ML Integration with SystemML
Date Fri, 22 Sep 2017 01:03:44 GMT
> * Looking over the github repo, apparently R4ML is not under active
> development/maintenance anymore (last commit Jul 20). So who would be
> willing to maintain and extend it?
> ALOK: We will doing development into it . there are open PR already.
No commits since Jul 20 does raise warning flags, as Matthias pointed out.
For some perspective, SystemML has 1013 commits in the last year (~2.78 per
day). No R4ML commits in 2 months is concerning for obvious reasons. It
implies no real work has been done on the project for months.

> * Providing wrappers for our algorithm scripts would be just a start
> because it hides our core value proposition of custom large-scale ML.
> Hence, we would also need an MLContext equivalent that allows to execute
> arbitrary DML scripts or R functions. Is there already a tentative design
> of such an API and if not, who would like to take it over?
> ALOK: Currently no out of box MLCtx.
I believe this also raises some warning flags. Looking over the code at, it looks
like the code in the R4ML master branch utilizes an old API that does not
currently exist in SystemML. As Matthias pointed out, a key value
proposition of SystemML is customizable machine learning, which would
require an API that currently exists in the project.

That said, I believe an R API interface to SystemML is extremely valuable
and I think the whole SystemML community would benefit from the R API, and
I hope you will pursue the issue further. It looks like it has been in
development since June (


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