Table 9 Confusion matrix for comparison of reference observations with ANN classifications for postures of legs (1: sitting, 2: standing with straight legs, 3: standing on one straight leg, 4: standing on both bent legs, 5: standing on one bent leg, 6: kneeling)

1

45% (79.856)

10% (17.208)

8% (13.641)

17% (29.987)

9% (15.059)

12% (20.878)

2

4% (4.832)

38% (51.256)

25% (34.213)

20% (26.735)

13% (17.937)

1% (1.681)

3

9% (8.320)

22% (20.812)

33% (31.363)

17% (16.255)

16% (15.564)

2% (2.346)

4

13% (15.438)

16% (18.377)

19% (22.255)

35% (40.750)

13% (14.716)

5% (6.008)

5

7% (5.830)

16% (13.993)

20% (17.070)

12% (10.300)

34% (29.683)

11% (9.886)

6

13% (34.240)

10% (27.485)

10% (26.872)

11% (30.171)

17% (45.000)

40% (100.000)