Table 3 Comparison of the results on the lung cancer dataset using the proposed method of topic model-derived clustering based on feature selection and two conventional clustering methods of k-means and PCA.

Topic model-derived clustering based on feature selection

2

1

42

11

22

0.2809

2

11

47

3

1

40

8

21

0.2417

2

4

15

3

9

35

4

1

37

8

18

0.2926

2

9

35

3

0

14

4

7

1

k-means

2

1

41

12

24

0.2461

2

12

46

3

1

8

35

31

0.1365

2

27

17

3

18

6

4

1

6

14

25

0.1602

2

22

6

3

18

6

4

7

32

PCA (10 features) + k-means

2

1

12

46

24

0.2461

2

41

12

3

1

8

35

31

0.1456

2

22

6

3

23

17

4

1

16

5

25

0.1605

2

6

14

3

7

32

4

24

7