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MASON-INTEREST-L  November 2021

MASON-INTEREST-L November 2021

Subject:

Re: Licensing for an Extension to MASON

From:

Justin Noah Kreikemeyer <[log in to unmask]>

Reply-To:

MASON Multiagent Simulation Toolkit <[log in to unmask]>

Date:

Sat, 13 Nov 2021 14:51:35 +0000

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (197 lines)

Hi Sean,

> Licensing

Thank you for the helpful clarification! I opted for the Apache-2.0
license. I think there is no version 3.0 yet.
The dependency distributed under MPL 1.1 is iText:1.2.3, which was
moved to com.lowagie and later to com.itextpdf (see mvnrepository).
However, since version 4.2.2 and on their website, they seem to use the
AGPL 3.0.

> Extension

I will keep the code in a separate repo for now, as it is easier for me
to maintain. You can find it on GitHub (justinnk/mason-ssa, also see
the link in my first message, which got masked). If you need a short
description: 

"This extension provides facilities to simulate models via (optimized)
stochastic simulation algorithms, like the Next Reaction Method. Its
key feature is the support for automatic dependency-tracking using an
aspect-oriented approach."

Kind Regards,
Justin

On Sat, 2021-11-13 at 00:01 -0500, MASON-INTEREST-L automatic digest
system wrote:
> There are 2 messages totalling 107 lines in this issue.
> 
> Topics of the day:
> 
>   1. Licensing for an Extension to MASON (2)
> 
> ---------------------------------------------------------------------
> -
> 
> Date:    Fri, 12 Nov 2021 12:26:53 +0000
> From:    Justin Noah Kreikemeyer <[log in to unmask]>
> Subject: Licensing for an Extension to MASON
> 
> Hi,
> 
> Background: The work on my bachelors thesis resulted in an extension
> to
> the MASON framework, which enables using (efficient) stochastic
> simulation algorithms in an ABM context. I finished my thesis and
> want
> to make the extension open-source. You can find it on
> GitHub: 
> https://secure-web.cisco.com/1VLJtB7taajA7NU7_z_nAHa0I644MNtO1b6RI65r5QXp9-LJYONEsLxaQVZ8CjErXtpU1LJYrnMOM2T3GavZxWB_eKK3GLByXp4TXaAlzMkI2VmdZ4lzySHOU638dMu-emTE4TthIxY5do7RZsqfkvBvmaQIITY6Y0hiCJB8lNqe64q4KMfnZMfO6NKllq_ZHOFZz-fYIoTPJWVxtIXmviHzi4-J3XcxXPZ8sWS13KGl3DoqFZc2BnH7_5YdWUVpgYluINyMLLsnHWfMxHk3040Ql0D_QWbbPhQ7aEWVGkYKWyp3cKsprBX_HrbQqBrvDW0890jBcUzMe0KxRulbG7XwjkQEvZGkP3KEKnqcVemTcNh75TROJAzvwztP-bHOvQQhL0nJf8KLQhk-ZVKl3xAz7eOgQsw3VN7w15_4VwmWduaUeXEoxO1KkQKJ5WgY3-ni2F40-3iA9vxDz--V1iQ/https%3A%2F%2Fgithub.com%2Fjustinnk%2Fmason-ssa
> . I am still working on
> adding more documentation/the complete thesis. There is also a paper
> coming up on the WSC2021 if you're interested.
> 
> While I prepared the GitHub repository, a few questions came up:
> 
> 1) Why has there been no release to the maven central repository
> since
> version 14.0 of MASON? Would it be possible to release the newest
> version? This would make installing it a lot easier (automatic).
> 
> 2) As this is my first open-source project, I did a lot of research
> on
> licensing. I was shocked how confusing the situation regarding
> license
> compatibility is. I think, the AFL 3.0 might be a good choice for an
> extension, as MASON itself is licensed under AFL 3.0 too.
> However, I am wondering whether further obligations apply to me,
> since
> MASON uses quite a few dependencies, distributed under a myriad of
> licenses, which might be incompatible (LGPL, MPL, ...). Especially,
> in
> the case where I distribute a .jar of demo models, which contains all
> those dependencies to be runnable.
> Making things even more complicated, through AspectJ, I modify the
> MASON code automatically at compile-time (right now this applies to
> the
> Bag, Network, Edge, Steppable and MersenneTwister classes). But I
> guess
> this is supported by the AFL license/BSD license for the RNG...
> Judging from the website and mailing list archive, there has been
> some
> work put into license compatibility, so maybe you could clarify the
> situation for me.
> 
> 3) Would you consider adding the extension to the list on your
> website?
> Right now it is more of a prototype, meaning it works if you know
> what
> you do, but I intend to put some more work in to making it more
> robust
> and adding documentation.
> 
> Kind regards,
> Justin
> 
> PS.: To the developers of MASON: Thank you for the great framework
> and
> the extensive documentation! It really supported me completing my
> B.Sc.
> 
> ------------------------------
> 
> Date:    Fri, 12 Nov 2021 07:56:06 -0500
> From:    Sean Luke <[log in to unmask]>
> Subject: Re: Licensing for an Extension to MASON
> 
> On Nov 12, 2021, at 7:26 AM, Justin Noah Kreikemeyer
> <[log in to unmask]> wrote:
> 
> > 1) Why has there been no release to the maven central repository
> > since
> > version 14.0 of MASON? Would it be possible to release the newest
> > version? This would make installing it a lot easier (automatic).
> 
> Maven support was something handled at length by my students; but
> with covid and a different project for developing MASON, it dropped
> off.  I don't use maven at all and don't even know how to build for
> it, so it'll have to be someone else handling that.  [In truth, maven
> is such a pain to build for that we've given serious thought to its
> value at all].
> 
> > 2) As this is my first open-source project, I did a lot of research
> > on
> > licensing. I was shocked how confusing the situation regarding
> > license
> > compatibility is. I think, the AFL 3.0 might be a good choice for
> > an
> > extension, as MASON itself is licensed under AFL 3.0 too.
> > However, I am wondering whether further obligations apply to me,
> > since
> > MASON uses quite a few dependencies, distributed under a myriad of
> > licenses, which might be incompatible (LGPL, MPL, ...). Especially,
> > in
> > the case where I distribute a .jar of demo models, which contains
> > all
> > those dependencies to be runnable.
> > Making things even more complicated, through AspectJ, I modify the
> > MASON code automatically at compile-time (right now this applies to
> > the
> > Bag, Network, Edge, Steppable and MersenneTwister classes). But I
> > guess
> > this is supported by the AFL license/BSD license for the RNG...
> > Judging from the website and mailing list archive, there has been
> > some
> > work put into license compatibility, so maybe you could clarify the
> > situation for me.
> 
> Ultimately there are two kinds of licenses: viral licenses (GPL etc.)
> and academic licenses (BSD, AFL, Apache, MIT).  LGPL licenses, when
> used in the way MASON uses them, generally fit in the academic
> category.  [Let me know which library MASON is using that's MPL:
> we'll have to deal with that.]  
> 
> MASON avoids viral licenses so as to broaden its applicability
> everywhere.  This means that if you're developing something that
> MASON will be relying on, it *must not* be viral.  If you're building
> something on top of MASON, as I think you are, you can do as you
> please.
> 
> MASON's original license was AFL, but that's pretty archaic at this
> point.  If you're just starting building an open source tool on
> MASON, I would strongly suggest that you use Apache 3.0.  That's what
> I use for all new software.  As an academic and research developer I
> would strongly suggest you do *not* use GPL.
> 
> 
> > 3) Would you consider adding the extension to the list on your
> > website?
> > Right now it is more of a prototype, meaning it works if you know
> > what
> > you do, but I intend to put some more work in to making it more
> > robust
> > and adding documentation.
> 
> Sure.  You have two main options.
> 
> 1. You maintain the code yourself, at your own location, and we put a
> link to it on MASON's website.
> 
> 2. I give you access to MASON's contrib directory, where you'd
> maintain and store your project.  To do this (1) the project should
> be in pretty good shape and (2) should generally follow MASON style,
> including documentation and (if it's not too much of a pain) its
> unusual brace style.
> 
> Sean
> 
> ------------------------------
> 
> End of MASON-INTEREST-L Digest - 11 May 2021 to 12 Nov 2021 (#2021-
> 10)
> *********************************************************************
> *
> 

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