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Re: [computer-go] SlugGo mea culpa

On 10, Mar 2005, at 7:07 AM, Mark Boon wrote:


Just out of curiosity: was the nature of the mistake you made to the
effect that you configured MFG to play sub-optimally, or to the effect
that you configured it to play at its lowest level instead of its
highest?
The mistake, in detail, is that we set the level for play to 10 (the highest)
and then set the time in the nngs protocol to 999 minutes, thinking that
999 minutes would be so long that MFG would not try to reset its level
to make any time deadline. We also resent to MFG after each move that
it still had 999 minutes left, and indeed this showed up as expected in
the MFG time box. What we did not ever notice was that MFG started
decrementing its play level down until it was playing at level 3. We now
know what to look for, although that is no help because we run games
all night long when we are not there.

From what we have seen, this seems to be a bug in both our nngs
implementation and in MFG. We are still trying to get it all right so that
we can start taking data all over again. I am in contact with David
Fotland and we will get this straightened out.

On 10, Mar 2005, at 9:17 AM, Pierce T.Wetter III wrote:

It was a bug with the time reporting of their nngs emulator. They had the level set
correctly, but were basically reporting the time available as none, so every move MFG would drop its level down one step until it reached 3.
We believed that we were always reporting the time remaining as
the unchanged 999 minutes, and that was what was displayed in
the Many Faces time window.

We have hacked our implementation so that the time after that first
setting (returned after each move) is zero, and that works if we are
playing a handicap game, but not for an even game. We then tried
decrementing the available time by one second after each move,
but that results in different behavior on different machines ... some
decrementing but not always down to 3.

We are still beating on it.

Mark Boon wrote:

Curiously awaiting the new results...

Us too ...


Cheers,
David


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