> -----Original Message----- > From: [email protected] > [mailto:[email protected]] > On Behalf Of Misja Alma > Sent: 15 August 2009 15:54 > To: bug-gnubg > Subject: [Bug-gnubg] How to calculate snowie error rate from > logged databasedata > > Hi, > > I've been trying to reconstruct my Snowie error rate from a > match that I've logged in the database with gnubg. [snip] > I then checked what the value for snowie_moves was for my > match, and it was the total number of (forced or unforced) > moves of me and my opponent added up.
I can't help with the rest of your query, but I do know that this is correct. Snowie uses the sum of your and your opponent's moves as the divisor. Forced or unplayable moves (such as being closed out) are counted. This is the main reason that gnubg's gradings are so much tougher than Snowie's. # Lot's of people dislike Snowie's method, because it is counter-intuitive to count your opponents' moves as the divisor for your own error rate. However, it is the rate that people are most familiar with (which I suppose is why you are trying to extract it.) Douglas Zare also wrote an interesting article at GammonVillage in which he argued in its favour. -- Ian _______________________________________________ Bug-gnubg mailing list [email protected] http://lists.gnu.org/mailman/listinfo/bug-gnubg
