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A "perfect" (chess) rating system
Assume we want to have a player rating system with the following conditions:
For simplicity, no draws.
If A wins against B with ratings $a,b$, their new ratings are $a'=f(a,b),b'=g(a,b)$.
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Applied Probability with Four Disjoint Subsets.
I have a rather longwinded question, so please bear with me!
A number of employees conduct duties at company X. Each type of employee meets by department 4 times yearly. Occasionally, a ...