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XG rollout confidence

Posted By: eXtreme Gammon
Date: Thursday, 9 June 2011, at 12:12 p.m.

In Response To: XG rollout confidence (leobueno)

XG displays the 95% confidence interval, which is roughly plus or minus twice the standard error.

When displaying RO results it also display the chances that each move is the best. In the case of 2 moves this is similar to who GnuBG does with JSD. if there are more than 2 moves, it compare each move with ALL others (GNUBG compare each move with the top one). I think it results in an easier and more comprehensive results.

The down side of XG's approach is that with more than 2 moves there is not formula to calculate the chances that each move can be the best and it relies on a Monte-Carlo algorithm which is set to yield a 2 decimal accuracy in the percentage.

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