Stefan Kaitschick wrote: > Bots love to throw in useless ko threat type moves now and then. > Sometimes its just a wasted threat, at other times it loses a useful > liberty too. Why do even strong bots show this "stupid" behaviour?
> Ko threat type moves have one thing in common: a big payoff if the > opponent answers incorrectly. If the first response tested is wrong, > then the ko threat will start off with a very good winrate. The > correct response will be found fairly soon, but by then the original > move will have a winrate bonus. > This bonus is small, but it is there. The problem is, that the winrate > degradation, that a useless ko threat causes, can also be small. So if > the (erroneous) bonus outweighs the (real) loss, the bot will conclude > that throwing in the ko threat is good. I think it's a little more complicated than that. Suppose that X and Y are a ko threat and its only response, and A is the 'best' move (the move that the computer would play if the ko threat wasn't an option). Then X is competing against A. X has a (large) advantage for each time the 'opponent' fails to choose Y, but it also has a disadvantage for each time the 'player' chooses a move other than A in the position after X-Y. -M- _______________________________________________ Computer-go mailing list [email protected] http://dvandva.org/cgi-bin/mailman/listinfo/computer-go
