So far on 9x9 go, Many Faces doesn't seem to make a huge difference.  On
19x19 it makes a huge difference.  I ran test games overnight against Gnugo.
With Many Faces turned on, my engine wins 85%.  With many Faces turned off,
my engine wins 7%.

Both results are unexpected.  Since most of my tuning is on 19x19, the
combination of Many Faces and UCT is probably badly mistuned for 9x9.

David

> -----Original Message-----
> From: computer-go-boun...@computer-go.org [mailto:computer-go-
> boun...@computer-go.org] On Behalf Of David Fotland
> Sent: Wednesday, September 30, 2009 10:58 PM
> To: 'computer-go'
> Subject: RE: [computer-go] Progressive widening vs unpruning
> 
> I'm trying an experiment.  I took the Many Faces code completely out of
> the
> engine, and put it on 9x9 cgos as mfgo-none-1c.  It's faster without Many
> Faces, but it's just a basic uct engine with medium playouts.  This should
> tell us how much benefit I get from the Many Faces knowledge.
> 
> David
> 
> >
> > I recall that you credited the use of Many Faces rules with a massive
> > improvement against GnuGo, so the technique is certainly empirically
> > justified.
> >
> > But I am wondering how it achieves its results. That is, what do you
> think
> > the difference is, compared to standard unpruning?
> 
> 
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