Chris, Bill ...
There was one 2!:5 call found still referring to
a Windows environment variable, which I hadn't
converted, and that was where the startup script derailed.
Many thanks. You sort of saved my holiday weekend.
-M
At 2023-04-06 03:28, you wrote:
Or you can try
0!:1 <'/home/m
Or you can try
0!:1 <'/home/math/j9.4-user/config/startup.ijs'
to see what's going wrong.
On Thu, 6 Apr 2023 at 3:13 AM chris burke wrote:
> What do you get when loading that script? Try
>
>loadd '/home/math/j9.4-user/config/startup.ijs'
>
> On Wed, Apr 5, 2023 at 10:45 AM Martin Kreuzer
Thanks, Cliff
Yes, I also wrote a function some years ago, "m_gauss_jordan", merely
converted from a
gauss-jordan I found somewhere - sorry not to attribute it... I
couldn't locate it under
addons/math, but perhaps it's there.
I think the only changes were to replace the primitives * % + -
Depending on what you mean by "good", it sounds like you're probably
looking for a https://en.wikipedia.org/wiki/Hill_climbing algorithm.
I hope this helps,
--
Raul
On Wed, Apr 5, 2023 at 5:11 PM Elijah Stone wrote:
>
> If some set of values is good, and increasing one of the variables makes i
== Report of Meeting 2023-03-30 ==
Present: Ed Gottsman, Dave Lambert, Devon McCormick, Raul Miller, and Bob
Therriault
Full transcripts of this meeting are now available on the its wiki page.
https://code.jsoftware.com/wiki/Wiki/Report_of_Meeting_2023-03-30
1) We started off with Ed's fourth
If some set of values is good, and increasing one of the variables makes it
bad, continuing to increase that variable will never make it good again.
On Wed, 5 Apr 2023, Raul Miller wrote:
What does monotonicity mean here, for a multivariate expression?
Thanks,
--
Raul
On Wed, Apr 5, 2023 at
What do you get when loading that script? Try
loadd '/home/math/j9.4-user/config/startup.ijs'
On Wed, Apr 5, 2023 at 10:45 AM Martin Kreuzer wrote:
>
> Dear all -
>
> My Linux machine broke down.
>
> New J setup (v9.4.1) on different hardware seems to work, except that
> my startup.ijs isn't
load modular_matrix_divide.ijs
open script for function/adverb definitions
gcd's, gauss-jordan, modulo divide and modular matrix divide
I think this is a draft of the modular matrix system solver that I imagined
a couple decades ago. It may still have some rough edges/mistakes.
gcd2x 51 119
17
Dear all -
My Linux machine broke down.
New J setup (v9.4.1) on different hardware seems to work, except that
my startup.ijs isn't recognised:
"An error occurred when loading startup script:
/home/math/j9.4-user/config/startup.ijs"
It's the same file I use under Windows without any proble
What does monotonicity mean here, for a multivariate expression?
Thanks,
--
Raul
On Wed, Apr 5, 2023 at 6:44 AM Elijah Stone wrote:
>
> I know not the first thing about linear programming or numerical optimisation,
> but I have a problem which I think is related; can anyone point me in the
> r
Not J, but it sounds like convex optimization maybe?
https://www.cvxpy.org/examples/basic/linear_program.html ... or maybe one
of the examples more resonates with your problem :
https://www.cvxpy.org/examples/ .. I'd be very interested in J solutions to
some of these examples
Not necessarily fast
Surely it's just that
{{
opens a direct definition; isn't the session waiting for a matching
}}
to close the definition?
Mike
Sent from my iPad
> On 5 Apr 2023, at 15:34, RICHARD VAUGHAN wrote:
>
> I find that ([{{"1) causes the system to hang, while ([{ {"1) and ([{"1{)
> work as expect
I find that ([{{"1) causes the system to hang, while ([{ {"1) and ([{"1{) work
as expected. Perhaps I have ignored some rule regarding spacing, but this
puzzles me. The behavior is the same in J9.3 and J9.4. I am running the full
version on Windows 11. Thanks!
---
Depending on how complicated the function you're trying to approximate is,
I'd take a look at a simple linear model (using %. ; take a look at the
best fit lab), or a neural network (see e.g. the neural network example on
the J Playground, which classifies 2d data).
Another classifier often used i
I don't know how you'd choose the points to sample, but once you have
them a soft-margin SVM solves for the boundary.
https://en.wikipedia.org/wiki/Support_vector_machine
Marshall
On Wed, Apr 05, 2023 at 03:44:49AM -0700, Elijah Stone wrote:
> I know not the first thing about linear programming
See https://en.wikipedia.org/wiki/Automated_machine_learning
Good luck!
Bo.
Den onsdag den 5. april 2023 kl. 12.44.56 CEST skrev Elijah Stone
:
I know not the first thing about linear programming or numerical optimisation,
but I have a problem which I think is related; can anyone point
I know not the first thing about linear programming or numerical optimisation,
but I have a problem which I think is related; can anyone point me in the
right direction?
I have a set of variables x y... (usually not more than two, though there
might be in some cases), and an oracle which can t
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