Table 2 The nested features produced to improve the model accuracy.

From: Data-driven audiogram classifier using data normalization and multi-stage feature selection

Feature number

How to classify

22

Minimum and maximum of A1, and A3 of class 1

23

Minimum and maximum of median, and standard deviation of class 2

24

Minimum and maximum of median of class 3

25

Minimum and maximum of A2 and A3 of class 4

26

Minimum and maximum of Median, and standard deviation of class 5

27

Minimum and maximum of Median, and standard deviation of class 6

28

Minimum and maximum of Min-max, and median, of class 7

29

Minimum and maximum of A1 of class 8

30

Minimum and maximum of A3 of class 9

31

Minimum and maximum of A3 of class 10