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EPJ Data Science

Table 7 An example of the Mean-Std approach. The reported samples are labelled with the minority class, and it is shown the generation of two additional data samples

From: Leveraging augmentation techniques for tasks with unbalancedness within the financial domain: a two-level ensemble approach

Minority class

#

Feature 1

Feature 2

Feature 3

Class

1

58

2143

12

1

2

33

231

19

1

3

47

446

14

1

4

33

512

87

1

Mean

42.75

833

33

 

Std

10.49

763.43

31.28

 

\(x_{i} = \mathit{Mean} - \mathit{Std}\)

42.75 − 10.49

833 − 763.43

33 − 31.28

 

Synthetic Data

32.26

69.57

1

1.72

Synthetic Data

32.26

69.57

1.5

1.72

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