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| Score estimator bug http://prod.lifein19x19.com/viewtopic.php?f=24&t=4211 |
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| Author: | Numsgil [ Sun Jul 10, 2011 3:20 pm ] | ||
| Post subject: | Score estimator bug | ||
I know there are quite a few score estimator bugs, but this one seems especially puzzling. There's a large seki in the center of the board. If I use the "Scoring" tool, I get a score of something like B+6 (there are prisoners). If I use score estimator, it seems to figure out the correct status of all the stones, but comes up with a score of W+50.  See the position at the end of the attached SGF.
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| Author: | Li Kao [ Sun Jul 10, 2011 3:23 pm ] |
| Post subject: | Re: Score estimator bug |
Sekis never work with SE. If I recall correctly it thinks all stones in a seki are dead and counts them as prisoners. |
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| Author: | Numsgil [ Sun Jul 10, 2011 3:24 pm ] |
| Post subject: | Re: Score estimator bug |
But it graphically marks them as shaded, so it seems to understand the concept. |
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| Author: | lefuet [ Sun Jul 10, 2011 3:59 pm ] |
| Post subject: | Re: Score estimator bug |
iirc the score estimator is not improved anymore. the original programmer is gone. the estimator is just left as a convenience for us lazy counters. It still has many bugs but the alternative would be no estimator t all. 
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| Author: | Dusk Eagle [ Sun Jul 10, 2011 6:02 pm ] |
| Post subject: | Re: Score estimator bug |
See also this thread. Judging from posts 15-19, I figure the score estimator will never be improved without a complete rewrite (which could be an interesting project). |
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| Author: | Harleqin [ Mon Jul 11, 2011 12:56 am ] |
| Post subject: | Re: Score estimator bug |
The score estimater is a bug. Its results are useless, since you cannot trust them even if they seem right at first glance. Just ignore its existence. |
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| Author: | Numsgil [ Mon Jul 11, 2011 11:09 am ] |
| Post subject: | Re: Score estimator bug |
Grr, reading that other thread I realize dead end code when I hear it  Can we expose a way to override it? For instance, GnuGo can estimate the score. I figure WMS probably wants to keep an all Java client, but exposing a hook to the command line might be a reasonable midstep to a full replacement. |
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| Author: | topazg [ Mon Jul 11, 2011 11:28 am ] |
| Post subject: | Re: Score estimator bug |
You'd need to download the .sgf and load it in a separate window, but I recommend http://ricoh51.free.fr/go/dariusheng.htm very highly with respect to score estimation |
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