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RE: [Bug-gnubg] Rotating rolls in rollout

From: Ian Shaw
Subject: RE: [Bug-gnubg] Rotating rolls in rollout
Date: Fri, 4 Oct 2002 11:17:49 +0100

> From: address@hidden [mailto:address@hidden
> Sent: 04 October 2002 10:48
> My suggestion would be to scramble the sequence of first 
> rolls, while still 
> using each of them one time. This might also allow stratification of 
> rollouts which are not a multiple of 36 or 1296, and might be easily 
> extendable to
This might be a good solution. Are you suggesting a static but scrambled order, 
or a random order each time but checking you haven't used that permutation 
before. The latter seems more natural but is probably more processor intensive. 
I suppose you could generate a random sequence 1-1296 at the start of the 
rollout and use it to index through the roll permutations.

One final query is, what happens to the Standard Error? Zare suggests that the 
SE reported is too high because the variance is reduced by the stratification. 
Is this taken into account? Is it even possible to do so?


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