TableĀ 3.

Repartition of the 200 smallest distances for the observer, cP and sd distances.

datasetfirst metatarsalradiusteeth
distancetrue (112)afalse (1718)true (198)false (792)true (180)false (4671)
observer181 (72%)119 (7%)120 (60%)80 (10.1%)134 (74.4%)66 (1.4%)
observer298 (87.5%)102 (5.9%)n.a.n.a.n.a.n.a.
dcP77 (68.7%)123 (7.2%)99 (50%)101 (12.8%)130 (72.2%)70 (1.5%)
dsd86 (76.8%)114 (6.6%)127 (64%)73 (9.2%)138 (76.7%)62 (1.3%)
  • aThe distance between two surfaces is said to be true if the corresponding specimens belong to the same species, and false otherwise. The total number of such pairs is given in parenthesis. We chose the first 200 distances in both sets to guarantee that we would include both types of distances. We note that the best possible performance for a distance measure would find 112 true and 83 false distances for the metatarsal dataset, 198 true and 2 false for the radius dataset, and 180 true and 20 false for the teeth dataset.