Re: [Bug-gnubg] Different results for Hint function

[bar tomas]

Hi,

thanks very much for your reply. I've attached to this email an example of a match (in tmg format) in which I observed the incident I mentioned. Before starting this test I reinstalled gnubg, so there would be no customized saved settings. These are the exact steps I took:

TEST 1

- Start Gnubg (GUI version)

- I set evaluation and analysis parameters to 'world class', by:

Settings/Analysis/Chequer play 'world class'
Settings/Analysis/Cube decisions 'world class'
Settings/Evaluation/Chequer play 'world class'
Settings/Evaluation/Cube decisions 'world class'

- I imported the tmg match (file test.tmg attached to this email).

- In the navigator panel which contains all the moves of the game (at the right of the GUI) I selected the 12th move of player 'p1' in game 1:

move : 21/15
dice : 51
position ID : hbcdAFC2bUgKBA
match ID : cImmAAAAAAAA

When selecting this move, I press the Hint button and, this move is ranked 7th (with MWC 60.33%)

TEST 2

-Start Gnubg (GUI version)

- I set evaluation and analysis parameters to 'world class', by:

Settings/Analysis/Chequer play 'world class'
Settings/Analysis/Cube decisions 'world class'
Settings/Evaluation/Chequer play 'world class'
Settings/Evaluation/Cube decisions 'world class'

- I start a new match and enter the position ID hbcdAFC2bUgKBA and the match ID cImmAAAAAAAA.

- I press the Hint button but the move 21/15 is ranked 9th (with MWC 61.33%)

TEST 3

- Start Gnubg (CLI version)

- I set evaluation and analysis parameters to 'world class', by the following commands (maybe some unnecessary because default):

set evaluation chequerplay type evaluation
set evaluation chequerplay evaluation plies 2
set evaluation chequerplay evaluation cubeful on
set evaluation chequerplay evaluation prune on
set evaluation movefilter 1 0 0 8 0.160000
set evaluation movefilter 2 0 0 8 0.160000
set evaluation movefilter 2 1 -1 0 0.000000
set evaluation movefilter 3 0 0 8 0.160000
set evaluation movefilter 3 1 -1 0 0.000000
set evaluation movefilter 3 2 0 2 0.040000
set evaluation movefilter 4 0 0 8 0.160000
set evaluation movefilter 4 1 -1 0 0.000000
set evaluation movefilter 4 2 0 2 0.040000
set evaluation movefilter 4 3 -1 0 0.000000
set evaluation cubedecision type evaluation
set evaluation cubedecision evaluation plies 2
set evaluation cubedecision eval prune on
set analysis chequerplay type evaluation
set analysis chequerplay eval plies 2
set analysis chequerplay evaluation cubeful on
set analysis chequerplay evaluation prune on
set analysis movefilter 1 0 0 8 0.160000
set analysis movefilter 2 0 0 8 0.160000
set analysis movefilter 2 1 -1 0 0.000000
set analysis movefilter 3 0 0 8 0.160000
set analysis movefilter 3 1 -1 0 0.000000
set analysis movefilter 3 2 0 2 0.040000
set analysis movefilter 4 0 0 8 0.160000
set analysis movefilter 4 1 -1 0 0.000000
set analysis movefilter 4 2 0 2 0.040000
set analysis movefilter 4 3 -1 0 0.000000
set analysis cubedecision type evaluation
set analysis cubedecision evaluation plies 2
set analysis cubedecision eval prune on

-Then I entered positionId and matchID:

set matchid cIlmAAAAAAAA
set board hbcdAFC2bUgKBA

- Then when I ask for a hint:

hint 15

In this case, the move 21/15 is ranked 12^th with MWC 66.09%

Thankyou very much if you have an idea why I get different scores for the same move with apparently the same evaluation settings.

tomas

On 1/18/08, Christian Anthon <address@hidden> wrote:

If you could create a reproducible example it would make things a lot easier for us to track down.

Christian.

On Jan 18, 2008 12:58 PM, bar tomas < address@hidden> wrote:

Hi,
When using Gnubg, sometimes I get slightly different results when using the 'Hint' button.
What I mean is if I load a match I have already played, and select a move (in the right hand panel) and ask for a Hint, sometimes the result is not the same as if I create a new match and enter the match id and the position id for that move (in the text boxes at the top of the screen), and then ask for a Hint. The differences aren't huge, for instance one of my moves might be ranked 4th in a Hint when selecting a move of a loaded match. And then the same move is ranked 6th when entering the match id and position id of the move in a new match.
I have exactly the same settings for analysis and evaluation (2-ply). I have checked every setting in the .gnubgautorc file (movefilter, etc) and they are identical for analysis and evaluation.
Is there anything else I could set in order to get the same result for Hint used in both modes.
Thank you very much.

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test.tmg
Description: Binary data