Re: [Bug-gnubg] Measuring performance levels

[Joseph Heled]

Morten Wang wrote:
> 
> * Joern Thyssen
> > Yes, uncheck cubeful rollout and uncheck cubeful chequerplay. Turn off
> > the Jacoby rule.
> 
> thanks to both of you!
> 
> I figured both those checkboxes for cube usage would have to be
> unchecked, but I'd forgotten the Jacoby rule.
> 
> I did the 21600 0ply rollout for reference, and here's what I got:
> 
> Cube analysis
> Rollout cubeless equity  +0,516
> 1. Double, take         +0,619
> 2. Double, pass         +1,000  ( +0,381)
> 3. No double            +0,335  ( -0,284)
> Proper cube action: Double, take
> 
> Rollout details:
> Centered 1-cube:
>   0,758 0,069 0,000 - 0,242 0,068 0,000 CL  +0,504 CF  +0,335
>  [0,050 0,024 0,028 - 0,050 0,012 0,000 CL   0,113 CF  +0,138]
> Player O owns 2-cube:
>   0,755 0,069 0,000 - 0,245 0,068 0,000 CL  +0,998 CF  +0,619
>  [0,049 0,024 0,028 - 0,049 0,012 0,000 CL   0,223 CF  +0,282]
> Full cubeful rollout with var.redn., with rotate rolls
> 21600 games, seed 11 using Mersenne Twister
> Play and cube: 0-ply cubeless
 
I think Doug insisted on Cubeless. All my rollouts show around a 3.7 gammon
rate, while (if I read this correctly) this rollout gives 6.9

So, is this really a cubeless rollout? What else can be wrong?

-Joseph