Table 2 Statistics for COGNIMUSE database (Hollywood movies and GWW) annotated with salient events

Percentage (%) of salient frames

A

25.4

56.3

55.0

33.4

60.9

58.3

54.6

69.2

V

30.1

46.3

37.9

32.4

39.2

43.3

36.9

71.5

AV

27.4

47.7

43.1

37.8

49.6

50.7

39.7

70.1

AVS

63.2

76.6

64.8

71.8

68.5

72.7

67.6

88.0

Average (pairwise) correlation between annotators

A

0.54

0.48

0.46

0.49

0.51

0.52

0.42

0.55

V

0.31

0.33

0.32

0.45

0.38

0.43

0.38

0.36

AV

0.45

0.45

0.41

0.54

0.44

0.50

0.44

0.40

AVS

0.29

0.24

0.27

0.29

0.31

0.33

0.23

0.22

Chronbach α for three annotators

A

0.78

0.73

0.72

0.74

0.76

0.76

0.69

0.79

V

0.58

0.60

0.58

0.71

0.65

0.69

0.65

0.62

AV

0.71

0.71

0.68

0.78

0.70

0.75

0.70

0.67

AVS

0.55

0.48

0.52

0.55

0.57

0.59

0.47

0.45