Noam Brown
speaker
1,199 appearances
1 recordings
1 series
first heard Dec 2022
last heard Dec 2022
Noam Brown’s voice in public audio — every appearance, attributed to the second.
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And it could be that six-player poker belongs to some class of games where approximating a Nash equilibrium through self-play provably works well.
And there are other classes of games beyond just two-player zero-sum where this is proven to work well.
So there are these kinds of games called potential games, which I won't go into.
It's kind of like a complicated concept.
But there are...
Classes of games where this approach to approximating a Nash equilibrium is proven to work well.
Now, six-player poker is not known to belong to one of those classes, but it is possible that there is some classic games where it either provably performs well or provably performs not that badly.
Personally, I think the most interesting thing about Pluribus is that it was so much cheaper than Libratus.
I mean, Libratus, if you had to put a price tag on the computational resources that went into it, I would say the final training run took about $100,000.
You go to Pluribus, the final training run would cost like less than $150 on AWS.
No, no, no.
It's not.
I mean, first of all, yeah, computing resources are getting cheaper every day, but you're not going to see a thousand-fold decrease in the computational resources over two years or even anywhere close to that.
The real improvement was algorithmic improvements, and in particular, the ability to do deplimented search.
Yeah, yes.
So where this depth-limited search came from is, you know, I developed this technique and ran it on two-player poker first.
And that reduced the computational resources needed to make an AI that was superhuman from, you know, $100,000 for Libratus to something you could train on your laptop.
What I would take away from that is that algorithmic improvements really do matter.
Well, I think the idea is that we want to be able to leverage search as much as possible.
And the way that we were doing it in Libratus required us to search all the way to the end of the game.
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