[onoway]

I was wondering if once a hand has been played several times if GIB adjusts the bidding? As in do the odds somehow change? Many many times there will be a whole lot of tables with 3 GIBS and a person and the bidding will start out the same, the person being silent throughout, but my GIBS arrive at a totally unique contract. Like this one today:

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Bidding went: (North opened) pass 1♥ pass 2♣
pass 2♥ pass 2♠
pass 2NT pass 4nt
6nt pass pass pass

At the time I played the hand there had been 14 other tables which had played the hand, all with 3 GIBS and one person, all but one the person sitting south. The 13 tables with the human sitting south ALL (except mine!) ended up in 4!H +2 (the one with a human west 7♥-1). It's very disconcerting when the GIBS do this sort of thing. One morning I had a whole string of them, with me on the losing end of them all. THAT was highly discouraging.

[barmar]

No, GIB doesn't adjust its bidding over time.

However, in the MBC, there can be differences between the robots. Some can be basic bots ($1/week rental), some can be advanced bots ($1/day rental), and some can be downloaded bits where the user can adjust the thinking time.

Also, in the MBC the random number generator used in simulations has a different seed at different tables. This can cause differences in bidding and play.

[onoway]

barmar, on 2012-January-30, 16:26, said:

No, GIB doesn't adjust its bidding over time.

However, in the MBC, there can be differences between the robots. Some can be basic bots ($1/week rental), some can be advanced bots ($1/day rental), and some can be downloaded bits where the user can adjust the thinking time.

Also, in the MBC the random number generator used in simulations has a different seed at different tables. This can cause differences in bidding and play.

I very rarely play in Main, almost always in IAC unless in a tourney or playing with specific friends who don't belong to the club. Also I am using download version with the settings on about the middle tending to the thinking side. If you set them much further over it can take forever for a hand to play. Sometimes as it is GIB contemplates a trick for 20 or 30 seconds even if only one possible card TO play.

So perhaps, then, my GIBS are actually just "thinking" more than the basic bots that most people likely buy. That is FINALLY an explanation that makes sense to me. Thank you.

[Bbradley62]

So, 13 auctions went like this:

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Since this is MBC, it's not a single seed number, and probably a variety of Advanced and Basic bots. What goes into choosing between 3♥ and 4N over East's 2N?

[Bbradley62]

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No explanation for the 2N bid?

[onoway]

Bbradley62, on 2012-January-31, 12:05, said:

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No explanation for the 2N bid?

If you notice that was the single example with a human sitting west so who knows what the 2nt was supposed to be, it may even have been a misclick. That one ended up in 7♥-1

[Bbradley62]

onoway, on 2012-January-31, 16:02, said:

If you notice that was the single example with a human sitting west so who knows what the 2nt was supposed to be, it may even have been a misclick...

Yes, I did notice that... But, I don't care what the player meant it to be... the bid exists (Jacoby 2NT) in GIB's bidding system, and it should be highlighted and explained, just like all the other bids in the auction.

[barmar]

Bbradley62, on 2012-January-31, 12:03, said:

So, 13 auctions went like this:

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Since this is MBC, it's not a single seed number, and probably a variety of Advanced and Basic bots. What goes into choosing between 3♥ and 4N over East's 2N?

The book bid is 3♥, and basic bots always make the book bid. Sims usually tell it to bid 4N (the exception in my test bid 3♣).