From: Emlyn O'regan (oregan.emlyn@healthsolve.com.au)
Date: Fri Sep 20 2002 - 00:34:22 MDT
gts wrote:
> He controls for possible biases that might be introduced by the
> measuring device in two ways, (and this is I think the true genius of
> the device): 1) if two intervals are measured to be the same, they are
> thrown out. Only interval pairs with a measured difference
> are used, and
> 2) the rule for determining if the relative intervals should
> be recoded
> as 1 or a 0 is reversed each time, so that if there is a bias due to
> imperfections in the device, that bias will favor neither 1's nor 0's.
On point 2: This doesn't reduce the bias at all! If you take the output of
the device, reversing every second bit, you'll get the biased sequence back.
ie: the bias isn't removed, it's just obfuscated.
Not that I think there would be bias, mind you. He does deal with the
infinitesimal decrease in emissions over time, creating a really quite small
bias toward longer time periods.
Emlyn
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