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Table 6 Performance results in our post-challenge improved system for the CEM subtask in the BioCreative IV CHEMDNER competition.

From: A CRF-based system for recognizing chemical entity mentions (CEMs) in biomedical literature

 

Run 1

Run 2

Run 3

Run 4

Run 5

cost

22

22

2

2

20

TP

18,025

19,259

19,389

19,495

19,355

FP

2,312

2,671

2,537

2,694

2,505

FN

7,326

6,092

5,962

5,856

5,996

Precision(%)

88.63

87.82

88.43

87.86

88.54

Recall(%)

71.10

75.97

76.48

76.90

76.35

F1 score(%)

78.91

81.47

82.02

82.02

81.99

ABBREVIATION

59.77

63.37

64.28

65.85

65.98

FAMILY

72.36

73.55

72.92

73.94

72.97

FORMULA

73.02

73.45

74.12

74.01

74.30

IDENTIFIER

64.72

63.35

66.67

64.33

66.86

MULTIPLE

23.62

32.16

35.18

33.17

30.65

SYSTEMATIC

79.19

82.86

83.25

83.22

82.56

TRIVIAL

71.41

81.76

82.38

82.70

81.56

NO CLASS

53.66

63.41

63.41

68.29

63.41