where where α α j ± ± 1 = 1 / ( 1 ∓ ∓ δ δ f T ~ ~ j ± ± 1 ) , δ δ f = ( l n f / 2 Δ Δ E ) , Δ Δ E is the energy bin size, and T ~ ~ denotes the running estimate. We define f as in, a factor >1 that multiplies the estimate of the DOS for the i'th energy bin when the system visits an energy in that bin.