The performance trends on the deMelo dataset differ from those on the Crowd and Wilkinson datasets.
score pp and score socal have substantially lower pre-ranking pairwise accuracy on the pairs they cover in the deMelo dataset than they do for Crowd and Wilkinson: score pp has an accuracy of just 0.458 on covered pairs in the deMelo dataset, compared with 0.676 and 0.753 on the Crowd and Wilkinson datasets, and score differences for score socal are similar.