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Table 1 Class distribution in the training set for edge detection.

From: Self-training in significance space of support vectors for imbalanced biomedical event data

Class label

Number of instances

Imbalance ratio

AtLoc

48

1:76282

Cause

1117

1:3277

Cause-Theme

6

1:610261

Site

425

1:8614

Site-Theme

3

1:1220524

Theme

9246

1:395

ToLoc

50

1:73231

Negative

3650680

1:0.002