Re: [Bug-gnubg] Largest swing yet between 0-ply & 2-ply

[Joseph Heled]

So far, for any given net, it was always possible to find positions with 
large discrepancies. (large - greater than 2)

-Joseph


Ian Shaw wrote:
> > -----Original Message-----
> > From: Joern Thyssen
> > Sent: 08 April 2003 13:00
> >
> > On Tue, Apr 08, 2003 at 12:45:56PM +0100, Ian Shaw wrote
> >
> > > This is the first time I've seen a swing of over 0.5 between 0-ply &
> > > 2-ply. I thought you, particularly Joseph, would be interested. It's
> > > even larger on a centred cube, at 0.547.
> >
> > If you look the at the cubeless equities they hardly change for bar/21
> > 6/5: 0.231 to 0.217. The difference is much larger for the 
> > the safe play 0.063 to 0.347.
> >
> > I don't find it particular disturbing. I think you can find many
> > positions where is really vital to look 2 or more plies ahead to get
> > accurate equities. 
>
>
> I don't find it particularly disturbing either. Your point about the safe play being almost unchanged is a good one. 
> I posted it mainly because I know one of Joseph's training methods is to use 2-ply evaluations to train 0-ply. I think the slotted position is still an interesting example, even if the discrepancy reduces to "only" 0.284 cubeless. Particularly since it was a mistake made by a human in OTB play. 
>
> Just out of curiosity, what's the largest discrepancy you've found between 
> 0-ply and 2-ply? Joseph? Anyone?
>
> --Ian
>
>
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