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[Bug-gnubg] 0.15 luck based FIBS rating diff bug ?

From: Massimiliano Maini
Subject: [Bug-gnubg] 0.15 luck based FIBS rating diff bug ?
Date: Mon, 12 Mar 2007 09:32:34 +0100

Hi all,

I've played and analyzed a match with 0.15 (Win) and I got a strange result:

        "Luck based FIBS rating diff.    +1470.12".

If I load the match with 0.16 (keeping the analysis done by 0.15),
I get the more reasonable result:

        "Luck based FIBS rating diff.    +304.25"

Now if I redo analysis with 0.16, I get +304 with 0.16 but if I save this to a new
sgf file and load it with 0.15, I get 1470 again ....

I've got the .sgf file but if I attach it the mail gats blocked and doean't reach
the mailing list ...

MaX.


************************
****       WITH 0.15        ****
************************

(Game over) show stat match
Player                          gnubg                   MaX

Checkerplay statistics

Total moves                     105                     107
Unforced moves                   91                      89
Unmarked moves                    0                       0
Moves marked good               105                     100
Moves marked doubtful             0                       6
Moves marked bad                  0                       1
Moves marked very bad             0                       0
Error rate (total)              +0.000                  -0.701 ( -7.044%)
Error rate (per move)             +0.0                    -7.9 ( -0.079%)
Chequerplay rating              Supernatural            Expert


Luck statistics

Rolls marked very lucky           1                       5
Rolls marked lucky                8                       5
Rolls unmarked                   91                      90
Rolls marked unlucky              4                       5
Rolls marked very unlucky         1                       2
Luck rate (total)               -0.277 ( -0.109%)       +0.922 (+73.857%)
Luck rate (per move)              -2.6 ( -0.001%)         +8.6 ( +0.690%)
Luck rating                     None                    None


Cube statistics

Total cube decisions             63                      69
Close or actual cube decisions   24                      24
Doubles                           5                       4
Takes                             4                       4
Passes                            0                       1
Missed doubles (below CP)         0                       2 (-0.126 ( -1.091%))
Missed doubles (above CP)         0                       0
Wrong doubles (below DP)          0                       0
Wrong doubles (above TG)          0                       0
Wrong takes                       0                       0
Wrong passes                      0                       0
Error rate (total)              +0.000                  -0.126 ( -1.091%)
Error rate (per cube decision)    +0.0                    -5.3 ( -0.045%)
Cube decision rating            Supernatural            Expert


Overall statistics

Error rate (total)              +0.000                  -0.827 ( -8.135%)
Error rate (per decision)         +0.0                    -7.3 ( -0.072%)
Equiv. Snowie error rate          +0.0                    -3.9
Overall rating                  Supernatural            Expert
Actual result                    -50.00%                 +50.00%
Luck adjusted result             +23.97%                 -23.97%
Luck based FIBS rating diff.    +1470.12
Error based abs. FIBS rating    2050.0                  1954.2
Chequerplay errors rating loss     0.0                    91.6
Cube errors rating loss            0.0                     4.2


************************
**** LOADING WITH 0.16 ****
************************

(Game over) show stat match
Player                          gnubg                   MaX

Checkerplay statistics

Total moves                     105                     107
Unforced moves                   91                      89
Unmarked moves                    0                       0
Moves marked good               105                     100
Moves marked doubtful             0                       6
Moves marked bad                  0                       1
Moves marked very bad             0                       0
Error rate (total)              +0.000                  -0.701 ( -7.041%)
Error rate (per move)             +0.0                    -7.9 ( -0.079%)
Chequerplay rating              Supernatural            Expert


Luck statistics

Rolls marked very lucky           1                       5
Rolls marked lucky                8                       5
Rolls unmarked                   91                      90
Rolls marked unlucky              4                       5
Rolls marked very unlucky         1                       2
Luck rate (total)               -0.277 ( +0.147%)       +0.922 (+74.241%)
Luck rate (per move)              -2.6 ( +0.001%)         +8.6 ( +0.694%)
Luck rating                     None                    None


Cube statistics

Total cube decisions             63                      69
Close or actual cube decisions   24                      24
Doubles                           5                       4
Takes                             4                       4
Passes                            0                       1
Missed doubles (below CP)         0                       2 (-0.127 ( -1.091%))
Missed doubles (above CP)         0                       0
Wrong doubles (below DP)          0                       0
Wrong doubles (above TG)          0                       0
Wrong takes                       0                       0
Wrong passes                      0                       0
Error rate (total)              +0.000                  -0.127 ( -1.091%)
Error rate (per cube decision)    +0.0                    -5.3 ( -0.045%)
Cube decision rating            Supernatural            Expert


Overall statistics

Error rate (total)              +0.000                  -0.828 ( -8.132%)
Error rate (per decision)         +0.0                    -7.3 ( -0.072%)
Equiv. Snowie error rate          +0.0                    -3.9
Overall rating                  Supernatural            Expert
Actual result                    -50.00%                 +50.00%
Luck adjusted result             +24.09%                 -24.09%
Luck based FIBS rating diff.    +304.25
Error based abs. FIBS rating    2050.0                  1954.2
Chequerplay errors rating loss     0.0                    91.6
Cube errors rating loss            0.0                     4.3

MaX.
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