steve2005, on 2018-March-23, 04:34, said:
It needs to loosen constraints playing against other Gibs too. Often Gib is out of range on bids.
Gib should not be playing random cards in tie. Gib should still do the right bridge play, including signaling if it knew how to do it.
Signaling of course would be awesome, but it's really super hard to implement properly. It's hard even teaching humans how to signal, let alone bot. The idea would be to bias the Monte Carlo sample based on partner's card, but how to adjust the sample is like super dependent on dummy and the auction, good signaling wouldn't be an always thing (sometimes with doubleton and partner leads A from AKx+ you DON'T want continuation and ruff, you want shift because need that first with natural trump trick etc., on flip side if partner asks continuation sometimes you are supposed to shift anyway).
But otherwise, GIB SHOULD be playing random cards in a tie. Falsecarding gives humans problems, if it always gave count or played up line or whatever it would be exploitable. GIB has no idea of what is "a right bridge play", this simply falls out of the calculation of DD analysis of its sample. What is the right play is what card works most often among the possible hands, the problem now is that it is excluding some hands it shouldn't because it is too trusting of the bidding. If it adjusted the sample to be more lenient and cover all possible remaining hands even if someone misbid, that should get rid of a large chunk of the weird ducking/non-ruffing for no particular reason plays, since then those ties would no longer be ties. It should like calculate first with more trust of the bidding to get highest candidate plays, then calculate a second time with looser/no constraints to break ties among the winners of the first round.