Fig. 3
From: Median quartet tree search algorithms using optimal subtree prune and regraft

E2 Results. A Percentage of the replicates with improved (left) and reduced (right) quartet scores compared to ASTRAL-III. These results are based on the heuristic search. B We show the normalized quartet score of Q-SPR trees across rounds minus the normalized quartet score of the ASTRAL-III tree (both with respect to input gene trees) as rounds progress (0: starting tree). The final delta normalized quartet score compared to the ASTRAL is marked for each replicate.