Topological accuracy depending on the rate of missing entries. Horizontal axis: percentage of missing distances (Pmiss. Vertical axis: topological accuracy measured by the mean (over 500 trials) quartet distance (d
) between the correct and inferred trees. s: number of taxon pairs that BIONJ* first selects using NJ-like criterion (6), and then analyzes using score-based criterion (9) (and criteria (8), (10), (11) in case of ties). The distance matrix is additive, and thus all methods recover the correct tree when Pmiss = 0.