Re: Conversion to git: mapping cvs userids to git authors

Hi! I have changed my real life name to Øystein Schønning-Johansen. If the system understand utf8, your can keep the ø's. If not, replace with Os. (Maybe I should update the AUTHORS file as well) Looking forward to use git. -Ø On Sun, 25 Feb 2024, 23:07 Philippe Michel, wrote: > W

Mac OS builds. Or even iPad?

Hi! I'm asking for a friend, as the apple products really aren't my style. Are there any builds of GNU Baclgammon for Mac avalable? or even iPad? -Øystein

Re: GNUbg version 1.08.001 available

Thank you again for your effort. Really much appreciated. Do you have the raw neural network weight files? -Øystein tir. 6. feb. 2024 kl. 08:13 skrev Philippe Michel : > A new version of GNUbg is available at https://www.gnu.org/software/gnubg/ > with the following improvements or new features

Re: # of hidden nodes

: > Thx! > > On Wed, Dec 27, 2023 at 7:20 PM Øystein Schønning-Johansen < > oyste...@gmail.com> wrote: > >> The normal contact position neural network had 250 inputs, 128 hidden >> nodes and 5 outputs. >> >> -Ø >> >> On Wed, 27 Dec 2023, 23:

Re: # of hidden nodes

The normal contact position neural network had 250 inputs, 128 hidden nodes and 5 outputs. -Ø On Wed, 27 Dec 2023, 23:23 Mark Higgins, wrote: > Can someone remind me pls - how many hidden nodes does the gnubg 0-ply bot > use in its neural networks? Thx! > >

Re: Backgammon API

I've been thinking of a backgammon protocol the whole day now. Here are some of my viewpoints. As Guido says, both UCI and xboard are terrible, and I think they have some weaknesses, yes. It is really hard to define a perfect protocol and it cannot be perfect on the first attempt anyway. I think

Re: Using GnuBG to test own bot

For the first question "Is it possible to use GnuBG to test an own implementation of a bot?", I would say yes, go ahead. I actually think it will be very hard to implement a bot on your own without having anything to verify against. I have used GNU Backgammon to verify my own codes over the

Re: human level opponents in GNUbg?

g 2023 at 02:07, Øystein Schønning-Johansen < > oyste...@gmail.com> wrote: > >> Yes! >> >> We could actually train neural networks with different characteristics. >> >> Let's say we do one loop through the training dataset, and for each >> position

Re: human level opponents in GNUbg?

Yes! We could actually train neural networks with different characteristics. Let's say we do one loop through the training dataset, and for each position we add a little notch to the winning probabilities for all positions that have an opponent checker on the bar (and maybe even a bigger notch

Re: "XG update" - anyone wants to chime in?

I think this is sad news. I have never been an XG user myself, but having a commercial product available is important for the backgammon community (even when an open source project exists). I think the price indication of the IPR is a bit high. (I guess Xavier reads this) I'm estimating a bit.

Re: Development - an outsider’s perspective

tir. 3. jan. 2023 kl. 22:44 skrev Philippe Michel : > This is not a core library approach either, but I think that in chess > open source software they tend to use a similar approach, with a few GUI > applications and many engines using a common communication protocol. > > That may be an

Best way of converting CVS repo to git ?

. Hopefully, converting from CVS to git will attract new contributors to the project. The question is: How is it best to do this? I have already added the git feature on the project admin page, but the git repo is (of course) still empty. Best regards, Øystein Schønning-Johansen Maintainer

Re: AW: Development - an outsider’s perspective

Happy new year to all! I agree that converting from cvs to git is a good idea. However, GitHub as the git repo provider may not be the best, and I think that should be discussed. (I do love GitHub, and I use it for all my personal projects, but there are some issues ... ) What I rather suggest

Re: Preview of forthcoming gnubg release

Mark! I don't think building on Linux systems is really difficult. I rather suggest that you try to build it from the source at your system, and then start a new thread here if you get into trouble. short (untested) sketch of what you need to do: Get the source code: Either - CVS: cvs -z3

Re: Preview of forthcoming gnubg release

After a first browse and playing some games, I can say it looks very good! I cannot see any glitches or bugs. The only comment I have after playing two matches is that it rolls very good dice for itself. It must be cheating! ;-) -Øystein man. 7. nov. 2022 kl. 22:26 skrev Øystein Schønning

Re: Preview of forthcoming gnubg release

Sounds promising, I'll give it a try now. -Øystein man. 7. nov. 2022 kl. 21:51 skrev Philippe Michel : > I have uploaded a new gnubg Windows build at > http://philippe.michel7.free.fr/gnubg/ > > If not for a report of a serious issue I will use this version for a > release next week. > > The

Re: Rollouts

It's just an option for use with initial positions, such that the first roll is never a double. Nice if you want to roll out a match equity table. I'm not sure how it handle the turn, when this option is used. I think I have to read the code to answer that. -Ø On Mon, Oct 17, 2022, 14:22

Re: Tools to convert xg file format to sgf

; WC2022 final, however, I think the problems are solvable. >>>>>> >>>>>> I've gathered the code in a github repository: >>>>>> https://github.com/oysteijo/xgdatatools >>>>>> >>>>>> And just as I did that,

Re: Preview of next gnubg release

ev Øystein Schønning-Johansen < oyste...@gmail.com>: > Ha! > > Sorry for the late reply. Now that I actually have a Windows computer and > some other postings on the list got me interested again; I finally > downloaded this "dev" release. 20220703 > > It looks

Re: Preview of next gnubg release

Ha! Sorry for the late reply. Now that I actually have a Windows computer and some other postings on the list got me interested again; I finally downloaded this "dev" release. 20220703 It looks fine to me. I love the new !Score map! feature! After playing a few games, I've not seen any glitches

Re: GNU Backgammon

>> >> 32 >> >> 0 (even) >> >> 50.0 >> >> 50.0 >> >> T-15 >> >> 34 >> >> 100 >> >> 52.0 >> >> 52.9 >> >> T-17 >> >> 36 >> >> 200 >> >> 54.0 >

Re: GNU Backgammon

Hmmm If my archive remembers correctly there never was a jac200 table. I don't have a copy of "Can a Fish Taste Twice as Good?", is it even a table in that book? I find no file called jac200.xml in the CVS attic either. So if there was a file called jac200,xml it must have been a local

Re: Tools to convert xg file format to sgf

has already done the same 3 years ago: https://github.com/zkitX/xgdatatools -Øystein fre. 12. aug. 2022 kl. 19:09 skrev Turker Eflanli : > Here they are - I don't remember where I had downloaded them from > > On Fri, Aug 12, 2022 at 12:01 PM Øystein Schønning-Johansen < > oys

Re: Tools to convert xg file format to sgf

Thank you so much, Turker! However, it would still be good to have the Petch-tools. :-) -Øystein fre. 12. aug. 2022 kl. 16:58 skrev Turker Eflanli : > Øystein, > > Find attached the raw file that you can analyze in GNU > > On Fri, Aug 12, 2022 at 10:12 AM Øystein Schønning-Joh

Tools to convert xg file format to sgf

Hi! I was thinking of analysing the WC 2022 final and found the final available in .xg format. I think Michael Petch wrote some tools to convert xg file into sgf format. Are these tools available somewhere? It states at: https://www.extremegammon.com/XGformat.aspx that the python source for his

Re: gnubg score map feature

What about granting Aaron write access to the CVS? -Ø On Tue, Sep 14, 2021 at 8:37 AM Christian Anthon wrote: > The easiest way is to post the code on the gnubg bug tracker on savannah > > On Mon, 13 Sep 2021 at 08.29, Gnubg wrote: > >> Hi Aaron, >> >> I forward your e-mail to the list. You

Re: GNU Backgammon Clones

Yeah! Good points, Ian. Maybe it is possible to "reverse engineer" the executable code of the potential clones and see if it matches the weights of a neural network from GNU Backgammon. The weights of a neural network will indeed be sequential in memory as in GNU Backgammon. This will be strong

Re: Snowie and GNUBG

Absolutely true. I would love to see a web based graphic user interface for the gnu backgammon engine. Say React or Angular or something javascript-ish. (Non of these are my cup of tea) -Øystein On Wed, Dec 2, 2020, 21:16 Rich Heimlich wrote: > There's one other big reality here and that's

Re: Snowie and GNUBG

No, you're not. I agree with you that GNU is stronger than Snowie from what I see, but I have never made any full analysis as I do not have an installation of Snowie. Since I do not have a full analysis that compares the strength, I cannot quantify the internal strength between them. You write

Re: cvs project member checkout?

> > Works fine from here (after I updated my very very old ssh keys anyway) > are you sure you are on a network that allows ssh out? > I would strongly believe it allows since I can indeed ssh out to other far-away computers. I have even tried to create a new key-pair, but still no success. I can

cvs project member checkout?

Hi! When I try to checkout the sources as a project member, savannah says the network is unreachable, [oystein@jupiter oystein]$ cvs -z3 -d:ext:oyste...@cvs.savannah.gnu.org:/sources/gnubg co gnubg connect to address 209.51.188.81: Connection timed out Trying 2001:470:142::81...

Re: The status of gnubg?

On Mon, Oct 19, 2020 at 7:52 PM Joseph Heled wrote: > I can comment on that: my experience from 20 years ago was that at some > stage adding positions started to hurt the net performance. It is always a > balancing act between getting the common/regular positions right and > getting the edge

Re: The status of gnubg?

an evaluation, compare the higher-ply result with > the 0-ply result and if the 0-ply errs by a large enough threshhold, add > the position to the database.) If not, do you think it would be worth > implementing this? > > Best regards, Aaron > -- >

Re: The status of gnubg?

On Mon, Oct 19, 2020 at 3:10 PM Aaron Tikuisis wrote: > That is interesting, I did not realize that gnubg misplays race positions > much. What are some examples? > Here is a position I posted a few weeks ago. GNU Backgammon Position ID: 960BAMCw+0MAAA Match ID :

Re: The status of gnubg?

On Mon, Oct 19, 2020 at 12:02 AM Joseph Heled wrote: > But someone starting work in that area can take the old frame for another > spin. They would learn a lot, even if they don't improve anything. > Yes! I can confirm that. > They can start with the "relatively" low hanging fruit of the race

Re: The status of gnubg?

I must admit there isn't much happening at the moment. But if you do find bugs or have ideas, feel free to post then here at the mailing list or use the bugtracker at savannah. Of course there's no guarantee that the ideas will be implemented or the bugs will be fixed. If you have a pull request

Re: Help on building GNU BG on Windows 10

rker > > On Tue, Oct 13, 2020 at 8:51 AM Øystein Schønning-Johansen < > oyste...@gmail.com> wrote: > >> Hi Turker! >> >> If you just want the CLI of gnubg on Windows 10, maybe you can use WSL 2? >> It works pretty well, and I cannot imagine that GNU Backgamm

Re: Help on building GNU BG on Windows 10

Hi Turker! If you just want the CLI of gnubg on Windows 10, maybe you can use WSL 2? It works pretty well, and I cannot imagine that GNU Backgammon will not be able to compile under WSL 2. -Øystein On Tue, Oct 13, 2020 at 2:43 PM Turker Eflanli wrote: > Ok, thanks for the reply. > > On Tue,

Re: Error while generating bearoff database

: > On Tue, Oct 06, 2020 at 09:59:20AM +0200, Øystein Schønning-Johansen wrote: > > > A huge onesided non-contact database like this will misplay a lot of > > positions. > > Is it really that bad ? > > I thought that, as long as one does not use shortcuts like the > --no-

Re: Error while generating bearoff database

estimates, so your argument is indeed valid. Thanks for pointing that out. -Øystein On Tue, Oct 6, 2020 at 2:32 PM Timothy Y. Chow wrote: > Øystein Schønning-Johansen wrote: > > >> And again: You should not build such a one-sided database in the first > >> place. You will

Re: Error while generating bearoff database

Hi, Thanks for your bug report. Let me have a guess. In file makebearoff.c lines 216ff: 216/* read distributions */ 217 218iOffset = 2 * iOffset; 219 220nBytes = 2 * (nz + nzg); 221 222if (fseek(pfTmp, iOffset, SEEK_SET) < 0) { 223perror("fseek'ing

Re: Bug in rollout ?

Thanks, I think you are spot on, Philippe. (And so i Theo) Easy for me does not imply that it is easy for the neural network. -Øystein On Wed, Sep 23, 2020 at 10:27 PM Philippe Michel wrote: > On Wed, Sep 23, 2020 at 06:22:28PM +0200, Øystein Schønning-Johansen wrote: > > > I stro

Re: Bug in rollout ?

win in 4 rolls for a gammon. Since O has > 13 pieces left, this means O has to roll doubles in 3 of the next 4 rolls, > which is about 4*(1/6)^3 ~ 1.85%. > > Ted > > On Wed, 23 Sep 2020, Øystein Schønning-Johansen wrote: > > > Hi all! > > I'm trying to rollout

Bug in rollout ?

Hi all! I'm trying to rollout a position as cubeless moneygame. I think I see a bug in GNU Backgammon. So here is my position: GNU Backgammon Position ID: 960BAMCw+0MAAA Match ID : cAkA +13-14-15-16-17-18--19-20-21-22-23-24-+ O: gnubg | |

Training data set url?

Hi again all! I'm looking for the training data again, and I know that it used to be here: http://files.gnubg.com/media/nn-training/pmichel/training_data/ It looks like it's not available anymore. Does anyone know where I can find a copy of the data? -Øystein

Re: Bug: Getting dice from random.org for the second time

Hmmm... Peter? Can you check if this bug appears both when doing multithreading as well as when running gnubg with a single thread? -Øystein On Wed, Aug 12, 2020 at 5:10 PM Christian Anthon wrote: > Definitely a bug of some kind. The dice generator either runs out > prematurely or decides that

Re: Bug: Getting dice from random.org for the second time

I've not tested, but could this be a problem at random.org? Maybe we should start using their new JSON-RPC based API? -Øystein On Wed, Aug 12, 2020 at 10:40 AM Peter Lederer wrote: > Hello Philippe, > > it happens consistently. Every time. > > My internet connection is flawless. > > If I

Re: OpenSuse 15.1 no display for gnu-bg

I've not seen that before, but from experience I've seen that a reboot is what makes things work again. That is especially true when it comes to display drivers on Linux systems. Have you tried that? -Øystein On Tue, Jan 21, 2020, 17:11 Mark Neidorff wrote: > Hi, > > > > I (at last, but never

Re: makebearoff -t 6x15 doesn't work for me

Thanks for your report. The makebearoff code was written last millennium, and the problem you're seeing is probably caused by some overflow problem in the code. These kind of stuff was hard to check back in the 90s. I guess it is fixable but ... * Assuming you are able to solve the code issue

Temporal difference learning. Lambda parameter.

Hi! As we discussed a bit last week I've started to think again. How can we improve a backgammon engine? I think that most of us agree that what can be improved is play in positions where some kind of long term plan is needed. Like "snake"-positions and backgames. The reinforcement learning

Re: Backgammon "solved"?

No, the question is fair enough. You just have to apply the FIBS rating formula when you have estimated a winning probability of the strongest player. -Ø On Thu, Dec 5, 2019 at 11:02 PM Theodore Hwa wrote: > That's not really a fair question. The point is, both GNUBG/XG and a > "perfect bot"

Re: current development

I have tried some experiments, and it looks like the training dataset (for contact positions) with the current input features, do indeed like some of the more modern methods. Briefly summarized: Things that improves supervised learning on the dataset: * Deeper nets, 5-6 hidden layers combined

Re: current development

But let's chat about the idea instead. What will it actually mean to 'apply "AlphaZero methods" to backgammon.' ? AlphaZero (and AlphaGo and Lc0 and SugaR NN) is just more or less the same thing as reinforcement learning in backgammon. So, from my understanding, it is rather AlphaZero, who has

Re: current development

Heled wrote: > Like I said, installed from the standard Ubuntu rep. > > Yes, info says multithread support. It says SSE/SSE2 support. What > about SSE3/4 etc, or they confer no real improvement over SSE2? > > -Joseph > > On Wed, 4 Dec 2019 at 09:58, Øystein Schønning-Johans

Re: current development

mon 1.06.002) and the rollouts speed seemed terrible. > > Do I need to do something in the GUI to enable multi-threading? (and I > hope that by multi-threading we are talking about multi-core, not just > threading, which does not help) > > -Joseph > > On Wed, 4 Dec 2019 at 09:38,

Re: current development

On Tue, Dec 3, 2019 at 7:37 PM Joseph Heled wrote: > I am out of the loop too, but speeding up rollouts (i.e. using modern > multicores) seems like a worthy improvement. > Isn't that done already? I think the code is multithreaded using gthreads from glib. I think it was done by Michael (and

Re: current development

Hi Sarah! Thanks for taking contact. Good to hear that you like GNU Backgammon. Is it still under development? Hmmm... debatable. There has not been many major improvements the last few years. Take a look at the projects ChangeLog.

Re: Training data on FTP down?

> > On Wed, Nov 27, 2019 at 10:30:38AM +0100, Øystein Schønning-Johansen > wrote: > > > > > I'm trying to download the training data from the site. > > > http://files.gnubg.org/media/nn-training/ > > > > > > Seems to me that the site does not respond.

Training data on FTP down?

Hi! I'm trying to download the training data from the site. http://files.gnubg.org/media/nn-training/ Seems to me that the site does not respond. What's happening? Have the site been taken all down? regards, -Øystein

Re: [Bug-gnubg] Web version of GNU Backgammon

On Tue, Sep 24, 2019 at 10:09 PM Philippe Michel wrote: > Was OpenGL really the only issue ? Probably not! (This is a good point, so thanks for pointing this out.) I didn't try much, but I assumed that the OpenGL 3D board was among the problems. I took one of the plain builds I had, I did not

Re: [Bug-gnubg] Web version of GNU Backgammon

Cool project. You have used emscripten to port the C code to webassembly? Isn't there a port og GTK done with emscripten? Another way to port to web would be to display the application itself with a different GTK backend. I've tried that with the Broadway backend that can display GTK applications

Re: [Bug-gnubg] The race training and benchmark datasets

Joseph Heled wrote: > You have many independent runs, right? Why worry about multi-threading? > Divide the set into (say) 16 threads (or whatever makes sense for your CPU) > and run each set on another thread. > > -Joseph > > On Mon, 17 Jun 2019 at 19:28, Øystein Schønni

Re: [Bug-gnubg] The race training and benchmark datasets

also only handle positions where gammon and backgammon are not a subject. I can probably handle those separately. -Øystein On Sun, Jun 16, 2019 at 10:33 PM Philippe Michel wrote: > On Mon, Jun 10, 2019 at 02:49:26PM +0200, Øystein Schønning-Johansen wrote: > > > I will try re

Re: [Bug-gnubg] The race training and benchmark datasets

Thanks, I will try re-rolling out these positions. Do you have any experience of how to do good rollouts of race positions? Good rollout settings for race positions? -Øystein On Sun, Jun 9, 2019 at 11:38 PM Philippe Michel wrote: > On Fri, Jun 07, 2019 at 08:30:10PM +0200, Øystein Schønn

[Bug-gnubg] The race training and benchmark datasets

Hi, all! Out of curiosity I've just started to look into the race datasets. I notice something really strange. I take all the positions from http://files.gnubg.com/media/nn-training/pmichel/training_data/race-train-data.bz2 and from this I create a dataset for training. Then I take all

Re: [Bug-gnubg] An old bug and possible neural nets input change

On Thu, Jun 6, 2019 at 12:21 AM Philippe Michel wrote: > Interesting diagram. I suppose the hc_0 and hc_1 prefixes mean the > inputs are for the player on roll and for the other respectively ? > Yes! hc is for "hand crafted" features, the cleaned dataset I used also have features prefixed by

Re: [Bug-gnubg] An old bug and possible neural nets input change

Sorry the late answer, Philippe! This is a really interesting find. I totally agree with you. The code that calculates PIPLOSS is really unreadable and un-maintainable. Some years ago I wrote a structure to hold the board state, and I then also had to adapt the input calculation to this new board

Re: [Bug-gnubg] Collaboration anyone?

It sounds like a really cool project. If you host it on github, and then announce it to some friends, I pretty sure you will have volunteers. -Øystein On Thu, May 16, 2019 at 10:30 PM Joseph Heled wrote: > > Hi, > > (I know this is the wrong forum, but casting the net anyway) > > I am looking

Re: [Bug-gnubg] Large bearoff databases (was: Huge evaluation difference)

OK, I've set up a private github repo of the twosided tools. State your github profile name in a PM if you want access. -Øystein On Sun, Mar 24, 2019 at 5:14 PM Øystein Schønning-Johansen < oyste...@gmail.com> wrote: > On Sun, Mar 24, 2019 at 4:33 PM Philippe Michel > wrote: >

Re: [Bug-gnubg] Large bearoff databases (was: Huge evaluation difference)

On Sun, Mar 24, 2019 at 4:33 PM Philippe Michel wrote: > On Sun, Mar 24, 2019 at 03:17:07PM +0100, Øystein Schønning-Johansen wrote: > > Yes. Really cool. I have earlier seen significant differences between > > one-sided and two-sided race evaluation, but this is not one of th

Re: [Bug-gnubg] Huge evaluation difference

it by bittorrent, or the generating code. The data file is 11 GB. -Øystein On Sun, 24 Mar 2019 15:00 Philippe Michel, wrote: > On Thu, Mar 21, 2019 at 12:54:18PM +0100, Øystein Schønning-Johansen wrote: > > > Cubeless prob. of saving gammon: 0.129424 > > 16: 13/12 12/6 -> 0.913

Re: [Bug-gnubg] Huge evaluation difference

I wrote a little tool some years ago, that calculate the "exact" value for such racing position. It calculates the probabilities with a top-down dynamic programming way and uses *-minimax algorithm to fill in the values and prune useless moves. It is really unusable in real life situation as the

Re: [Bug-gnubg] Surprising behaviour in cubeless play

I also believe this behavior is intentionally like this. I certainly do not remember, but I think the best answer will be provided by Jørn. On Sat, Feb 23, 2019 at 10:03 PM Philippe Michel wrote: > When choosing to play without doubling cube (in settings / options / > cube), the following

Re: [Bug-gnubg] Race position theoretical question?

with this property. Josephs position also work, but it has to be the race leading player on roll. Thanks guys, -Øystein On Tue, Jan 29, 2019 at 9:46 PM Philippe Michel wrote: > On Tue, Jan 29, 2019 at 08:00:22PM +0100, Øystein Schønning-Johansen wrote: > > Hi all! > > > >

[Bug-gnubg] Race position theoretical question?

Hi all! Here is a theoretical question for all of you: Can a race (aka. non-contact) position, be possible to lose backgammon with a good dash of unluck, and still be possible to win (with a good dash of luck). It is assumed that the player is really trying to get of the backgammon, and plays

Re: [Bug-gnubg] Gnubg pubeval score

Thanks for your effort Philippe. Your numbers looks correct. However, I think it is important to state some more details. First: Are the games played to completion? Or are the games terminated at race or bearoff or ... Second: Does the pubeval evaluate all the position classes? I once did the

Re: [Bug-gnubg] Gnubg pubeval score

How does the paper report this? Does it take gammon and backgammons into account (ie. cubeless moneygame) or does it just count win/loss ratio (ie. like one-point-match) ? -Øystein On Tue, Jan 22, 2019 at 11:05 PM Robert Edgar wrote: > Can anyone confirm the score of a recent version of gnubg

Re: [Bug-gnubg] Stopsend me email

Hi, if you follow the link at the very end of this email (or any email from the mailing list) you will find instructions on how to unsubscribe. If you have any problems unsubscribe, please contact the mailing list admin. The admin email address is also given at the linked web page. Regards,

Re: [Bug-gnubg] gnubackgammon

On Sat, Jul 28, 2018 at 10:27 AM Ralph Corderoy wrote: > > Can we rewind a bit because the mailing list isn't privy to what's > happened. > > Your first problem was the missing toolbar, so no New, Accept, Decline, > Undo, etc., buttons, but the rest of the game was present and working? > Sorry

Re: [Bug-gnubg] gnubackgammon

Hi again, Brenda. Now I'm a bit more uncertain what cases your problem. I'm adding the mailing list such that other users and developers may be able to help. I think you have to describe what you do get this error message. Is it when you start GNU Backgammon? From my hunch, I guess there is

Re: [Bug-gnubg] gnubackgammon

Hmmm... can it be that you are playing in full screen mode? Try hitting F11 or Esc. -Øystein On Sun, Jul 22, 2018 at 8:20 AM Brenda Langridge wrote: > I have been playing gnubg backgammon got quite a while now and really > enjoy it. When I used to load it, I always got the tool bar. Now >

Re: [Bug-gnubg] Possible evaluation bug

> set xgid XGID=BBCA-AB-B--eB-:0:0:1:51:0:3:0:5:10 > move 24/19 18/17 > previous > hint > > Perhaps it could be a clue. Not sure. > > Best regards, > TP > > > On Sat, Feb 17, 2018 at 1:05 PM, Øystein Schønning-Johansen > <oyste...@gmail.co

Re: [Bug-gnubg] Possible evaluation bug

ds, > TP > > > > > On Sat, Feb 17, 2018 at 11:44 AM, Øystein Schønning-Johansen > <oyste...@gmail.com> wrote: > > Really strange. However it is a heisenbug (of course). I cannot recreate > the > > bug on my system. (GNU Backgammon 1.06.000 Dec 13 2017, A

Re: [Bug-gnubg] Possible evaluation bug

Really strange. However it is a heisenbug (of course). I cannot recreate the bug on my system. (GNU Backgammon 1.06.000 Dec 13 2017, Arch Linux) Here is how the same thing looks at my system: GNU Backgammon Position ID: PgAAALYLBDMMAA Match ID : cImmADAE

Re: [Bug-gnubg] opening book?

> > Anyways, thanks a lot for the reply and sorry if I am getting you tired > with this reply... > Looking forward to your next reply :) > Please tell me if this text looks ok like the first I sent so if not I can > send a separate email. Thanks again :) > > *Sent:*

Re: [Bug-gnubg] random dice generator? hahahaaa

I really don't think Tim is suggesting this scheme, and I think he absolutely understands flaws of the scheme. Now the interesting part: How can you construct a scientific test to prove (or falsify) the postulate that a software uses such scheme? -Øystein On Fri, Aug 25, 2017 at 10:44 PM,

Re: [Bug-gnubg] random dice generator? hahahaaa

Yes! These threads are funny! I'm not sure if I'm feeding a troll or not. Who knows? Mario: How do you think it cheats? What have you done to verify and prove that it actually does cheat? Can you describe your scientific method for your verification? If you have not done any scientific study of

Re: [Bug-gnubg] Edit mode change proposal

I also agree. -Øystein On 16 Aug 2017 10:21, "Ian Shaw" wrote: I agree that it makes sense to reset the dice and cube. -- Ian -Original Message- From: Bug-gnubg [mailto:bug-gnubg-bounces+ian.shaw=riverauto.co...@gnu.org] On Behalf Of Philippe Michel Sent: 14

[Bug-gnubg] Threaded rollouts and RNGs

Hi! It's a long time since I browsed the GNU Backgammon code now. :-) The rollout code in GNU Backgammon is of course threaded. How is this threaded actually? Is it threaded on each sample (aka each game). One thread pr. game? Or one thread pr. evaluation? Or? I just wrote a code that does a

Re: [Bug-gnubg] Bearoff database

Really strange! I have built a one sided database using GMP with fractions with my own piece of code. Since I use fractions from GMP there should be no rounding error. Here are my numbers for position index 47: Index: 47 0: 0 1: 0 2: 1/18 3: 445/648 4: 5939/23328 5: 73/23328 These numbers

[Bug-gnubg] License of training data on ftp.

Hi! Do we consider the training data on the ftp site under any license, or do we consider the training data public domain? In case someone feel ownership to the data, please state your opinion. Why I'm asking is because I guess we could try to upload the training dataset to Kaggle, and maybe

Re: [Bug-gnubg] re FIBS

Really old thread, but I now found out what to do, and how to make Gibbon working on my system. (Arch Linux). Maybe I will make a PKGBUILD file for it later. Gibbon is depending on gsettings-desktop-schemas. Your system probably have a deb/rpm/pacman for that. gibbon comes with a .xml file.

Re: [Bug-gnubg] The little engine that could... Neural Network

Hi Robert! I would love to see more development on the engine and the neural nets. There are plenty of questions that could be asked when it comes to neural net topology and training methods. However, from my point of view based on my experience, I think the quality of a neural net evaluation

[Bug-gnubg] setting output digits to more than 4.

Hi, I just noticed a bug. When setting the number of outputs to 5 or more, the application crashes if I start a rollout. I think there is a buffer overflow somewhere. (No game) show version GNU Backgammon 1.05.000 Apr 25 2015 Arch Linux from Arch/Community build! -Øystein

Re: [Bug-gnubg] calculate_half_inputs - potential speed up

H. What about having a cache of each half board. If we calculate a (or keep a running and updated) hash value for each half board. at entry of calculate half inputs it checks the cache table. Of course this hash table can not have many enteries, as it probably will have to store 125 float

Re: [Bug-gnubg] GNUBG / GNU Coding Standards - C and or C++ - feedback wanted

I'm not sure this comment actually means that we should prefer a programming language over an other. As Steve McConnell says in Code Complete 2: Program into your language. Not in it! By this he mean abstraction to data types. What the GNU Backgammon code is missing is real abstraction of

Re: [Bug-gnubg] GNUBG / GNU Coding Standards - C and or C++ - feedback wanted

Let me make up the same program snippet with C++ syntax: Board board = Board(); Evaluator* eval = new gnubg(); Dice roll = Dice( 3, 1); Move best = eval-find_best_move( board, roll ); std::cout Best move is: best; // I just made up this code based on the abstractions I listed in the

Re: [Bug-gnubg] GNUBG / GNU Coding Standards - C and or C++ - feedback wanted

Hi! I must admit that I'm not a big fan of C++ but at least it does not make me sick (like Perl does). I usually have problems seeing what you can gain from using C++ over C? + you get better abstraction with C++. + you get templates which may simplify some things. + you get operator

[Bug-gnubg] One Side Race Rollout, move selection benchmark?

Hi! A question mainly to Joseph: Did you ever run any move benchmarks on the move selection algorithm for the one-side-rollout code? -Øystein ___ Bug-gnubg mailing list Bug-gnubg@gnu.org https://lists.gnu.org/mailman/listinfo/bug-gnubg

Re: [Bug-gnubg] autoconf, --enable-sse, SIMD, AVX

Totally agree. SSE as a term is even architecture dependent. SIMD is not. When the whole world has started using ARM processors, we have the configure option --enable-simd=neon ready! -Øystein On Thu, Jun 20, 2013 at 9:47 PM, Michael Petch mpe...@gnubg.org wrote: Howdy all, Some may not be

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