Zooming in on the relative reading levels of the paired unsimplified and simplified sentences, we wanted to determine for how many sentence pairs the sentence reading levels determined by our model are compatible with the pair's ranking.
we calculated the percentage of pairs (S, N ) in which the reading level of a simplified sentence (S) is identified as less than, equal to, or greater than the unsimplified (normal) version of the sentence (N ), i.e., S < N , S = N , and S > N .