Figure 8From: PQR sort: using PQR trees for binary matrix reorganizationAdjacency matrix of character coappearance in Les Misérables . (a) Original adjacency matrix of character coappearance, with 77 × 77 cells. (b-d) The same matrix after being reordered by 2D sort, Sugiyama, and PQR sort. Characters’ names were omitted.Back to article page