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ericgjackson / slumbot2019

Implementations of CFR for solving a variety of Holdem-like poker games
MIT License
133 stars 31 forks source link

build_betting_tree #3

Closed kli-casia closed 5 years ago

kli-casia commented 5 years ago

Hi, @ericgjackson I am wondering what’s the purpose of build_betting_tree?

Can you give an Intuitive example of the betting tree? i.e., after executing ../bin/build_betting_tree ms1f3_params mb1b1_params What has been saved on the disk?

Thanks

ericgjackson commented 5 years ago

It stores a representation of all the "betting paths" the players can take. For example, one path might be a preflop pot-size opening bet, followed by a call, followed by a flop check-check. The "betting tree" is the tree that represents all those paths.

You can run show_betting_tree to see the betting tree (nothing fancy, just a text representation of the tree).

On Tue, Jun 18, 2019 at 8:19 AM Kai Li notifications@github.com wrote:

Hi, @ericgjackson https://github.com/ericgjackson I am wondering what’s the purpose of build_betting_tree?

Can you give an Intuitive example of the betting tree? i.e., after executing ../bin/build_betting_tree ms1f3_params mb1b1_params What has been saved on the disk?

Thanks

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kli-casia commented 5 years ago

Thanks, I got it!

kli-casia commented 5 years ago

I run the show_betting_tree The output looks like this

"BC BC CBF" (id 153 lbt 18 ns 0 st 2 p1c)
          "BC BC B" (id 17 lbt 54 ns 2 st 2 p1c)
            "BC BC BC" (id 52 lbt 54 ns 2 st 3 p0c)
              "BC BC BC C" (id 52 lbt 54 ns 2 st 3 p1c)
                "BC BC BC CC" (id 154 lbt 54 ns 0 st 3)

I know st represents street But I cannot figure out what's the meaning of id,ldt,ns,p*c

ericgjackson commented 5 years ago

"ns" is the number of "successors"; i.e., the number of children of this node corresponding to actions you can take. There might be one or more bet successors, a fold successor, a call successor... "p1c" means player 1 choice - i.e, player 1 acts here; "p0c" means player 0 acts here. Player 1 is the button, player 0 is the big blind. "lbt" stands for "last bet to" - the total number of chips put into the pot by the last bettor. Not just the last bet, includes chips put into the pot on all streets. The big blind is considered to be 2 chips. "id" is just "ID". A number assigned to every node. IDs are unique for a given player on a given street.

On Tue, Jun 18, 2019 at 8:41 PM Kai Li notifications@github.com wrote:

I run the show_betting_tree The output looks like this

"BC BC CBF" (id 153 lbt 18 ns 0 st 2 p1c) "BC BC B" (id 17 lbt 54 ns 2 st 2 p1c) "BC BC BC" (id 52 lbt 54 ns 2 st 3 p0c) "BC BC BC C" (id 52 lbt 54 ns 2 st 3 p1c) "BC BC BC CC" (id 154 lbt 54 ns 0 st 3)

I know st represents street But I cannot figure out what's the meaning of id,ldt,ns,p*c

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kli-casia commented 5 years ago

Thank you very much for your patience to answer