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Table 8 Performance over extracted entities.

From: Mining clinical relationships from patient narratives

Relation Metric gold standard entities extracted entities
has_finding P 63 62
  R 82 32
  F1 71 41
has_indication P 44 44
  R 47 27
  F1 41 32
has_location P 73 68
  R 83 49
  F1 76 55
has_target P 59 47
  R 68 39
  F1 62 41
laterality_modifies P 86 83
  R 89 76
  F1 85 74
negation_modifies P 81 81
  R 93 53
  F1 85 60
sub_location_modifies P 87 71
  R 95 24
  F1 90 31
Overall P 64 63
  R 76 40
  F1 70 48
  1. Performance of relation extraction over automatically extracted entities, compared to relation extraction using perfect gold standard entities. For relation extraction, the cumulative feature set +event of Table 4 was used.
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