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Table 1 Earthquake detection validation

From: A framework for detecting unfolding emergencies using humans as sensors

Magnitude

Earthquakes

Detection results

Validation metrics

TP

FP

FN

Precision (%)

Recall (%)

F-Measure (%)

System validation against all the earthquakes registered by INGV

>2.0

404

17

30

387

36.17

4.21

7.54

>2.5

102

16

30

86

34.78

15.69

21.62

>3.0

26

13

17

13

43.33

50.00

46.43

>3.5

11

9

3

2

75.00

81.82

78.26

>4.0

7

5

0

2

100

71.43

83.33

>4.5

2

2

0

0

100

100

100

System validation against earthquakes that generated at least one report on Twitter

>2.0

128

17

30

111

36.17

13.28

19.43

>2.5

55

16

30

39

34.78

29.09

31.68

>3.0

21

13

17

8

43.33

61.90

50.98

>3.5

9

9

3

0

75.00

100

85.71

>4.0

5

5

0

0

100

100

100

>4.5

2

2

0

0

100

100

100

  1. Excellent values for the validation metrics are reported in italics