Our permutation generation algorithm is shown in Algorithm 1, where α = 0.05, β = 5.0, MAX NUM = 50, and K and K are two normalization factors to make p(swap num) and p(i, j) proper probability distributions.
as argued by Elsner and Charniak (2011), to better simulate the real situations that human readers might encounter in machine-generated documents, such oracular information should not be taken into account.