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Subject: Re: apache, commons, math
From: Ralph Goers <ralph.goers@dslextreme.com>
In-Reply-To: <nk6lei$nmt$1@ger.gmane.org>
Date: Sun, 19 Jun 2016 11:02:46 -0700
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References: <CAJcp7jscnrXz7bkY8UgCrFfF5r0LMs7f4wkUHZ9cOim78RnKcg@mail.gmail.com> <2F989D32-533C-4AA0-A95B-918C7934515D@dslextreme.com> <nk6lei$nmt$1@ger.gmane.org>
To: Commons Developers List <dev@commons.apache.org>,
 joerg.schaible@gmx.de
archived-at: Sun, 19 Jun 2016 18:03:04 -0000


> On Jun 19, 2016, at 10:40 AM, J=C3=B6rg Schaible =
<joerg.schaible@gmx.de> wrote:
>=20
> Hi Ralph,
>=20
> Ralph Goers wrote:
>=20
>> Thanks, Eric.
>>=20
>> I am OK with Commons Math being split into modules in the Commons =
Math
>> sub-project.
>=20
>=20
> That was my first idea too. But if the collection of all submodules =
will in=20
> the end nevertheless only contain 20% of the code, we gained nothing.
>=20
>=20
>> I am not OK with Commons Math A, Commons Math B, etc existing
>> within Commons. In other words, when a user traverses to Commons Math =
they
>> can then see the modules that make up Commons Math.
>=20
>=20
> The main problem seems to be that CM was a dumping ground for all kind =
of=20
> stuff that have at least the slightest relation to a mathematical =
base.
>=20
> Gilles never expressed it directly, but in its consequence he proposed =
to=20
> move the current CM into dormant/attic and extract single parts of the =
old=20
> code base as new components.

Personally, I don=E2=80=99t think moving it to the attic is appropriate. =
Projects go to the attic, not components.  The Math project (or =
sub-project) is free to add or drop components as the see fit, so long =
as it is a community decision.

>=20
> Some of those components can be:
> - Commons RNG (Random Number Generators)
> - Commons Complex (Complex Numbers)
> - Commons Matrix (Matrix Algebra)
>=20
> Those components might have an own life, those algorithms have a wide=20=

> audience and can be used in a lot of stuff on its own. The question is =
what=20
> happens with:
> - Commons Genetics (Genetic Algorithms)
> - Commons ML (Machine Learning)

If there is a case to be made to move components out of Commons Math to =
become individual Commons components then those proposals should be made =
individually so the merits can be discussed. For example, just by its =
name I am not sure why Machine Learning belongs in Math unless it really =
is just a bunch of machine learning algorithms.=20


>=20
> Or other stuff requiring deep mathematical background. I don't have =
the=20
> impression this belongs as own components into Commons. Moving CM as =
whole=20
> into a new TLP at least provides a place for all of it.
>=20
> The question is, what do we want as PMC members?

I=E2=80=99m not sure I understand the question. Once there are enough =
active committers then I would think they would become Math TLP PMC =
members when it is appropriate.

Ralph


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