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From: | Øystein Johansen |
Subject: | Re: [Bug-gnubg] bug in 3 ply equities |
Date: | Mon, 17 Nov 2003 17:11:37 +0100 |
User-agent: | Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.2.1) Gecko/20021130 |
Hugh Sconyers wrote:
Hi There is something strange going in this position. side on roll has:1-24, 1-23, 1-13, 2 each 9 8 7 6 5 4 pc = 138side not on roll has 1- 22 it is dmp.
GNU Backgammon Position ID: AAAgYNs2BKAAAA Match ID : cAklAAAAAAAA +13-14-15-16-17-18------19-20-21-22-23-24-+ O: gnubg | X | | X X | OOO 0 points | | | | OOO | | | | OOO | | | | OOO | | | | OO v| |BAR| | 1 point match (Cube: 1) | | | | | | | | | | | | | X X X | | X X X | Rolled 21 | X X X | | X X X O | 0 points +12-11-10--9--8--7-------6--5--4--3--2--1-+ X: user Like this?In this situation odd-ply and even-ply does match each other very well. The esponation is simply that the crashed net is not very well trained in these position type. The crashed net still needs a bit more training. To me it lloks like the net understands the pos when it's vied from O side, but overestimates X winning chances when it's viewing the position from X's viewpoint.
Dear Hugh,If you have reference positions like this, where you know the right(ish) outcome, the project would be very happy add this to the training database.
I can't say that the crashed net is the "worst" trained network, but it's simplest to find positions gnubg doesn't handle correctly in the crashed position class.
-Øystein
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