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Game Courier Ratings. Calculates ratings for players from Game Courier logs. Experimental.[All Comments] [Add Comment or Rating]

🕸📝Fergus Duniho wrote on Sat, Jan 7, 2006 05:18 PM UTC:

I have changed how the portion function works since last night. I plan to keep the range between 0 and 3000, since that is the range used for ratings by both FIDE and USCF, and I want to mirror that. The problem right now is that the method I'm using too quickly gives high and low scores. I probably need a different function for what I'm calling a plussum, so-called because I'm mainly doing this all from scratch without established terminology. The function for this is (games * 1500) / (games + 3). This starts out with the small amount of 375, but it rapidly increases toward 1500. At only ten games, the value is already approximately 1154. If this function were slower, we would see less disparity between the ratings. Maybe something logarithmic would work.