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Why do Bots Bid Differently for Different Humans?

#1 User is offline   zdas04 

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Posted 2019-August-07, 16:28

I just played a hand in a Robot Tournament (IMP 5177). On Board 12 the bidding went P - P (partner) -P -1S(me) -P -1N (partner) - P - 2H (me) - all pass. I finished and watched a half dozen other people play it and EVERY SINGLE TIME the bidding went P - P (N)-P-1S(S)-P -1N (N) - P - 2H (S) - P - 4H (N) - all pass. Can anyone tell me why the Bot would leave me in 2H and take everyone else to game (everybody made 4H)?
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#2 User is offline   etha 

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Posted 2019-August-08, 03:09

Its bidding is non deterministic. Let's say it is choosing between 2 and 4. It deals itself number of hands and looks at the best outcome. This obviously may be different depending what hands it deals for itself.
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#3 User is offline   hrothgar 

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Posted 2019-August-08, 03:52

 etha, on 2019-August-08, 03:09, said:

This obviously may be different depending what hands it deals for itself.


I was under the impression that the advanced robots use the same seed
Alderaan delenda est
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#4 User is offline   barmar 

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Posted 2019-August-08, 09:21

I looked at the traveller for this board, there's only one player in 4. They rebid 3 rather than 2. There's also someone in 5 after that 3 rebid. Most players ended up in 4, either by opening that or jumping to 3 or 4 after the 2NT response.

http://www.bridgebas...username=zdas04

There were several players who didn't finish board 12. But they never even started it, they all dropped out earlier, so they couldn't be what you saw, either.

#5 User is offline   etha 

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Posted 2019-August-09, 05:16

 hrothgar, on 2019-August-08, 03:52, said:

I was under the impression that the advanced robots use the same seed



Oh sorry didn't know that.
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