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Per Mark Glickman 1995 (Glicko paper), the key improvement of GLICKO over Elo is which?
AUses random sampling instead of deterministic update
BTracks 50 different skill dimensions per player
CSwitches from logistic to linear prediction function
DAdds a RATING DEVIATION that grows when inactive
Answer & Solution
Correct answer: D. Adds a RATING DEVIATION that grows when inactive
Glickman 1995 paper: each rating gets an RD (rating deviation). RD grows when player is inactive (uncertainty rises). RD shrinks with games played. Used in many indie + chess.com.
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