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Table 3 Medical entity extraction according to semantic types. Tr = T/N, type error rate; Br = B/N, boundary error rate; P = precision. All results are percentages.

From: Automatic extraction of semantic relations between medical entities: a rule based approach

  MetaMap LTS+MetaMap
  Tr Br P Tr Br P
Disease Or Syndrome 9.09 52.27 64.77 9.81 26.48 76.94
Injury or poisoning 33.33 34.84 49.24 26.19 35.71 55.95
Neoplastic Process 29.03 6.45 67.74 37.5 12.50 56.25
Anatomical Abnormality 85.71 0.00 14.28 40.00 0.00 60.00
Cell or Molecular Dysfunction 66.66 25.00 20.83 44.44 44.44 27.79
Total 30.08 30.52 54.62 12.23 27.10 74.21