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Table 4 Confusion matrices and average recognition rates of power transformed spectrogram feature (power parameter is 0.4) based on STL TSB-HMMs and MTL TSB-HMMs with 2 training samples and 128 training samples per target-aspect frame

From: Multi-task hidden Markov modeling of spectrogram feature from radar high-resolution range profiles

 

STL TSB-HMMs

MTL TSB-HMMs

 

An-26

Cessna Citation S/II

Yark-42

An-26

Cessna Citation S/II

Yark-42

2 × 135 training samples

An-26

90.4

5.3

42.3

95.8

1.4

5.0

Cessna Citation S/II

9.4

93.0

34.5

3.9

96.7

5.0

Yark-42

0.2

1.7

23.2

0.3

1.9

90.0

Average recognition rates (%)

68.9

94.2

128 × 135 training samples

An-26

99.2

3.3

1.2

98.9

1.2

1.4

Cessna Citation S/II

0.4

94.3

1.0

0.9

96.0

0.6

Yark-42

0.4

2.4

97.8

0.2

2.8

98.0

Average recognition rates (%)

97.1

97.6