Re: [Bug-gnubg] positive error rate bug

[kvandoel]

On Thu, 11 Sep 2003, Joern Thyssen wrote:

> On Wed, Sep 10, 2003 at 11:10:38PM +0200, address@hidden wrote
> > This is version 1.1357 WinXP.
> >
> > Import bug2.mat. Analyse 2-ply. Look at stats: OK. Save game/session
> > as bug2.sgf. Open bug2.sgf. Look at stats: one error rate is positive.
> There is an illegal move in the file:
>
>  42) 43: 6/3 6/2                 64: 25/19 20/16
>  43) 65: 4/0 4/0                 65: 4/0 4/0
>                                  ^^^^^^^^^^^^^^^^^
>                                  illegal move
>      Wins 2 points
>
> You'll also see a warning when you import the file.
>
> The problem was that gnubg added the illegal move to the move list and
> this confused it when it loaded the SGF file.

I hope you agree it's still a bug.

What is needed  (at least if you want to  do unsupervised batch analysis
of matches)  is a format checking  module on importing  matches.  If the
format is incorrect (and this happens a LOT when dealing with real-world
generated .mat files) the result should not be undefined or a crash, but
a failure to load plus the setting  of a status flag which can be polled
from a script to detect load status.

Kees