New Rating System

so the elo system will be completly repealed? (Top Lists etc?)

What will happen with the color system, that shows more ore less the elo lvl of the player. Will it be adapted to the new system?

ok, but the toplists stay in elo or will that be changed too?

It just claims it is "ELO" in fact it is WHR .. you can tell if you can see +- range in your skill like
"Casual rank: 27. (1822 ± 40, Top 21.8%)"

The rating number you see can be interpreted just the same as Elo. The equation to calculate the win probability is the same and average rating is the same. The only difference with WHR is in how your rating changes after every match.

Anir the requirements to be included in the ratings are a little harder than with the old rating. You need to actually be "ranked" in order to be included on the ladder, thus the ratings only include players who play regularly enough to perform consistently.

Not exactly. With the old system, Godde would regain pretty much exactly his old elo with slight changes. With the new system, the recent games will be weighted much more than his old games, which means he might return with a completely different rating.

The system assumes his rating didn't change and then uses the recent games to confirm this assumption (or disprove it).

Maybe I'm missing something but https://zero-k.info/Ladders seems broken (no ladder displayed)

its down at the moment i assume, but i also noticed that some people were ranked higher, yet with less 'elo' score. please debug

Would help to put some explanation of the ranking percent (like what you mentioned here, but by the rankings). Like "you are 48% of people that played in last 2 months" - or anything similar. Also the +/- will decrease with more games you play and increase when you are inactive?

That isn't a problem with lobby value updates, I don't want to spam updates and my rank updated an hour or so after your main fix. The issue was the everyone was appearing as unranked, after previously being ranked, and the ladder page emptied.

To add a quick description of what the numbers mean. For example in "Casual rank: 27. (1822 ± 40, Top 21.8%"

”27." is your rank among active players. Being active means having played around ten matches during the last month or 5 matches today if you were inactive before. These match numbers are different for every player, because activity is defined by the uncertainty ("± 40") being below a global cutoff.

"1822" is your rating as estimated from your most recent game. It is recalculated daily in order to make fine adjustments based on the opponents you played against. For example when you played against a smurf and lost rating, this rating will be restored if the system successfully identifies the smurf. Your visible rating will also start "decaying" as soon as your uncertainty rises above 20. Decay is proportional to uncertainty.

"± 40" is your rating uncertainty. It will generally decrease the more games you play. The only exception is if you start playing completely outside of your expected skill range. Uncertainty slowly increases over time, linear to the square root of days since your last game. Besides being used for decay and as the activity threshold, uncertainty specifies how much your rating will be affected by upcoming games. Very active players with a low uncertainty will only see rating changes in the single digit range, while the rating can jump hundreds of points for a newbie or an old player coming back.

"Top 21.8%" this is your percentile among all active players. The lower, the better.