35. Rank correlation with two α values given β = 1/365
・ Rank correlation of the
top 300 players
・ @ end of the data
(i.e., May 2010).
・ A modified Kendall rank
corr (Fagin et al., 2003)
・ corr ≧ 0.9 when α ≧ 0.15
・ Not robust only for small
α
36. Rank correlation with two β values
(one β value = 1/365)
・ Insensitive for small β ≦ 3/365 or so. (note: β = 1/365 included)
37. Sum of the scores
・ From the top, α = 0.15, 0.1, 0.08, 10 -5. We set β = 1/365.
・ Exponential increases.