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robert-7 / gambit

Gambit
http://www.gambit-project.org
GNU General Public License v2.0
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Investigate Weird Probability Distributions in some graphs #113

Closed robert-7 closed 7 years ago

robert-7 commented 7 years ago

We should be getting a uniform distribution over the chance nodes. However, this happened: 2016-11-25 18_04_10-

robert-7 commented 7 years ago

This seems to happen only when viewing the tree in GTE Tree Viewer. This is very odd since the .xml format doesn't output the appropriate probabilities as seen in a sample below.

      <node iset="Bet Round (4) - BRKBKCBK" player="Rose" prob="1/3" move="0. Rose received (Qh,Kd) and Colin received (Td,Th).">
      ...
      <node iset="Bet Round (4) - BRKBKCBK" player="Rose" prob="1/3" move="1. Rose received (Qh,Kd) and Colin received (Td,Qd).">
      ...
      <node iset="Bet Round (4) - BRKBKCBK" player="Rose" prob="1/3" move="2. Rose received (Qh,Kd) and Colin received (Th,Qd).">

Therefore, this is most-likely an issue on their part.

That being said, this issue is simply affecting the appearance. Apparently, the chance branches are apparently have their probabilities distributed internally, so nothing is really being affected.