Equation 8 · Part 1 · A Showdown Ladder Rating Measures the Ladder, Not the Player
Symbol c
What this part means
c is part of the quantity the equation computes from the expression on the right.
Its job in the formula
c is part of the quantity the equation computes from the expression on the right.
Full expression→Symbol c→Article meaning
The passage around this formula
, clamped to Showdown’s own configured ceiling of 130 rather than Glickman’s generic default ceiling of 350 [ 2 , 3 ] . Substitute Showdown’s published c = 6.6775026092 and the schedule is fully determined: it is not a metaphorical “uncertainty,” it is a specific number computed the same way every 24 hours for every account on the ladder. A brand-new Showdown account starts at RD = 130 — already at the top of Showdown’s own configured uncertainty range, since that range tops out exactly where the starting value sits — which is the algorithm’s honest way of stating that it knows nothing about a new player yet, before either the player or their opponents log a single result.
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
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Sources cited in the article section
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