Table 5 Distribution of the sample data.

From: Transformer fault diagnosis method based on SMOTE and NGO-GBDT

Status type

Training set

Test set

Verification set

N

89

29

29

D2

89

29

29

T1&T2

89

29

29

T2

89

29

29

PD

89

29

29

D1

89

29

29

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