how to specify komi in config file?

[lj739]

No description provided.

[Friday9i]

It's defined by the gtp parameters or the GUI, not in the config file!
Eg in Sabaki, you define the komi, the board size and the opponents, and KataGo will play using the cfg file (hence, komi in cfg would be redundant)

[lj739]

In goban, there is no place to specify komi in GUI. I like the GUI of goban, if there is no way to write komi parameter in config file, it would be a very sad news.

[lightvector]

Can you request that the authors of that GUI add the ability to specify the komi? KataGo is just like other engines here - it's pretty much universally true across all Go engines that if they support variable komi, then they accept komi through GTP, so all the GUI has to do is tell it to the engine.

[lj739]

The author hasn't renew this software one year and more, it is the most beautiful GUI I've ever seen. https://hraj.si/goban/

[lightvector]

I took a peek at the source code https://github.com/popojan/goban/search?q=komi&unscoped_q=komi and it looks like it actually does tell the bot a komi, based on handicap game or not.

So on KataGo's side this makes it awkward. I could easily add a config parameter to set the initial komi on startup, assuming that GTP doesn't override it, but in this case your GUI deliberately overrides it to the value that it chooses. So KataGo would also need a hack to specifically ignore the komi that the GUI is telling it that the GUI wants to use! Seems pretty ugly.

Edit: And also it looks like the GUI has some code to score the game. Which means if KataGo ignored the komi value to use its own, then the scoring in the GUI and KataGo's scoring would be different, so the GUI would report a different winner sometimes. Which seems also terrible.

How about you find out how to contact the author and see if you can get them to maintain it. If you like it so much maybe it will motivate them to work on it more. :)

[lj739]

Thanks for the quick reply. Katago is so strong that I must play with it on a very large komi. In sabaki lizgoban etc, specify any komi is a very easy case, but I can restrain my self from taking another bot to against it or telling me the next step. In goban, you have no way to use another bot, so you must consider the next move very carefully, it makes the learning process very effective. At komi 6.5 or 7.5, it is very desperate for human players. I don't have any code environment on my machine, and don't know how to make up a copy of goban with komi changed to -15(play as black) . If someone can help, thanks in advance.

[popojan]

Hello, @lj739, thank you for your feedback regarding goban. I opened an issue popojan/goban#17 and will see if we can find a better solution then recompiling with hardcoded komi -15. It is definitely lacking feature in goban, not katago.

[lightvector]

Looks like this is all handled. Great!