How do the classic programs handle these sequences of ko threats that must be precisely calculated to extreme depths?
- Don steve uurtamo wrote: > the issue with ko is the order in which the ko threats are played, > which can only be successfully evaluated if the average playout > finishes the ko correctly. > > s. > > On Sun, Mar 2, 2008 at 4:56 PM, ivan dubois <[EMAIL PROTECTED]> wrote: > >> Ok, I think I see what you mean, but I am not sure I really agree. >> As you say, this is related to horizon effect. I think current MC programs >> can play ko quite well because they are trying do delay the outcome of >> losing the ko, therefore they tend to play threats do gain time, just like >> human players do. I dont think it is essential that the ko be resolved >> inside the tree part. And I dont believe there exist efficient way to handle >> ko in the playout other than just fordiding simple ko recapture. >> >> Ivan >> >> ----- Message d'origine ---- >> De : Jonas Kahn <[EMAIL PROTECTED]> >> À : computer-go <computer-go@computer-go.org> >> Envoyé le : Dimanche, 2 Mars 2008, 21h32mn 43s >> Objet : Re: endgame (Was [computer-go] Re: Should 9x9 komi be 8.0 ?]) >> >> > But correct ko threats playing has nothing to do with the playout part : >> Since it is a strategic concept that involves global understanting, It is >> handled by the UCT tree part. >> >> Yes and no. >> Theoretically, that's the work of the UCT part. But, as Steve pointed >> out, kos can go on for long. I don't know what depth is attained in the >> tree (by the way, I would really like to know), but I doubt it is that >> long. Moreover, some kos must be kept for later. >> >> Hence, some basic understanding of kos in the playouts might be useful. >> >> That's merely a variation of the horizon effect. We could even imagine a >> situation where the UCT makes a threat that loses points in the only aim >> of having the ko past the horizon, where it would be 50-50 (for example) >> in the playout. >> >> Jonas >> _______________________________________________ >> computer-go mailing list >> computer-go@computer-go.org >> http://www.computer-go.org/mailman/listinfo/computer-go/ >> >> >> >> >> _____________________________________________________________________________ >> Ne gardez plus qu'une seule adresse mail ! Copiez vos mails vers Yahoo! >> Mail http://mail.yahoo.fr >> _______________________________________________ >> computer-go mailing list >> computer-go@computer-go.org >> http://www.computer-go.org/mailman/listinfo/computer-go/ >> >> > _______________________________________________ > computer-go mailing list > computer-go@computer-go.org > http://www.computer-go.org/mailman/listinfo/computer-go/ > > _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
