27 Apr '05 08:42

What about using the following for a tourny rating formula:

Tourny rating given by the larger of

(1) upper decile of the last 30 games and

(2) upper decile of the last 300 games (or all games if < 300 played)

The upper decile is calculated by sorting the selected values into an incrementing sequence and taking the rating 10% from the top.

(The median works the same way but is 50% from the top, an upper quartile at 75% etc)

That would be very hard to screw around with in regard to banded tournaments and would also avoid players being punished by localised peaks in their ratings.

Tourny rating given by the larger of

(1) upper decile of the last 30 games and

(2) upper decile of the last 300 games (or all games if < 300 played)

The upper decile is calculated by sorting the selected values into an incrementing sequence and taking the rating 10% from the top.

(The median works the same way but is 50% from the top, an upper quartile at 75% etc)

That would be very hard to screw around with in regard to banded tournaments and would also avoid players being punished by localised peaks in their ratings.