Stack rating
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In English
Stack Rating measures the attitude of players when joining a game. Players with a positive stack rating join the upper hand game more often than not. On the other hand, players with a negative stack rating try and join the lower hand team on average.
It is important to notice that this is not calculated through the on-screen (H)ELO numbers but through AllegSkill ratings. This means you may still get a positive stack rating even if you always join the game with less (H)Elo.
In detail
Calculation for the stack rating is fairly simple. It is the average of game imbalances at the moment of joining, taken with the correct sign.
In clearer terms, let's say Team 1 has 200 AllegSkill "points" and Team 2 has 300. Let us assume you have never played till now: your stack rating is zero. Joining Team 1 will push it to -100 (you're antistacking); joining Team 2 will push it to +100 (you're stacking).
Contributes from each games are then averaged out. For example, joining a game with +25 imbalance and a game with +75 imbalance will give you a +50 stack rating.
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