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Table 7 Testing performance according to the actual Mercalli intensity for the region of interest detection task. A 0/1 classifier is sufficient for medium and high energy events at municipality level, showing good performance in terms of recall

From: Nowcasting earthquake damages with Twitter

Act.

Pred.

-

1

2

3

4

5

6

7

0

0

790

0

1

737

1

0

66

85

62

25

5

1

1

130

234

351

198

65

95

4

Instances

1527

196

319

413

223

70

95

4

Error rate

0.48

0.33

0.26

0.15

0.11

0.07