A ottobre cambiamenti per SCORE e RATING

Just wanted to give an update on this as we are more than half-way through the month.

Firstly, I'd like to apologise for not sharing different leaderboards we have been experimenting with. I didn't want to pull them from the live server so they were coming from the slave server and a bit slow to calculate due to coming from raw data (prototypes don't warrant database changes) which prevented me from sharing the links publicly.

Secondly, I am pleased to announce we have what should be a decent system to use for October....

After trying various complicated systems, it turns out that actually just a minor tweak to the current Score system is all that's really needed to give a really great measure of player skill and performance: Score will only be based on your last 50 games played. Each loss will still count for 0 points (we had considered making it count for negative), since each loss from your 50 is an opportunity lost for a win and hence Score increase. At higher ratings, each win is also worth more Score (since it's player rating multiplied by opponent rating divided by 100).

Trialling this with game history for September correlated well with win-rate and rating (which everyone tends to associate with the best players), but this addresses the issue of people fearing a loss will cost them too much rating (hence them camping) and filters out those who simply don't play enough to get a statistically significant win-rate.

Your thoughts on this impending change to Score for October will be very welcomed. Feel free to still care only about Rating if you want but at least Score will now mean more to our top players. Meanwhile, we will not reset Rating at end of month any more (although we may "fuzz" it somewhat with a decay of the "confidence" element of the calculation).