Table 5 Simulation results for dataset ${\mathcal{D}}_{\mathbf{4}}$

uBLU

PCA

NMF

BFRM

GB-GMF

${\text{MSE}}_r^2(\times 10^{-2})$

0.02

N/A

5.12

N/A

N/A

1.61

0.01

3.59

15.35

18.69

0.05

0.44

N/A

14.42

19.20

${\text{GMSE}}_r^2(\times 10^{-1})$

0.28

N/A

3.23

N/A

N/A

0.87

0.02

2.65

0.33

1.62

0.69

0.76

N/A

0.50

1.30

${\text{SAD}}_r^2(\times 10^{-1})$

0.34

N/A

4.25

N/A

N/A

3.08

0.17

3.71

14.90

14.89

0.51

0.68

N/A

15.59

15.70

GSAD (×10⁻²)

4.97

5.24

5.25

157.09

156.19

RE (×10⁻⁴)

4.49

4.88

4.89

19.34

8.48

Time (s)

1.61×10³

0.02

1.36

35.29

0.40×10³

(b) R = 3

uBLU

PCA

NMF

BFRM

GB-GMF

${\text{MSE}}_r^2(\times 10^{-2})$

0.02

0.01

6.18

18.38

21.63

1.61

0.01

4.79

16.10

19.55

0.05

0.09

4.21

15.04

19.85

${\text{GMSE}}_r^2(\times 10^{-1})$

0.28

0.05

1.67

1.44

1.29

0.87

0.05

1.01

0.37

1.75

0.69

0.05

0.94

0.26

1.17

${\text{SAD}}_r^2(\times 10^{-1})$

0.34

0.27

4.12

15.21

15.65

3.08

0.17

4.09

15.26

15.90

0.51

0.32

4.16

16.07

15.36

GSAD (×10⁻²)

4.97

4.95

4.99

157.08

154.80

RE (×10⁻⁴)

4.49

4.34

4.36

25.00

8.48

Time (s)

1.61×10³

0.10

1.78

41.05

0.55×10³

(c) R = 4

uBLU

PCA

NMF

BFRM

GB-GMF

${\text{MSE}}_r^2(\times 10^{-2})$

0.02

0.01

6.98

17.51

21.60

1.61

0.01

7.30

15.07

19.03

0.05

0.07

4.27

14.55

19.14

${\text{GMSE}}_r^2(\times 10^{-1})$

0.28

0.22

0.65

0.75

1.29

0.87

0.51

0.91

0.77

1.18

0.69

0.05

0.56

0.56

1.33

${\text{SAD}}_r^2(\times 10^{-1})$

0.34

0.27

4.41

15.61

15.51

3.08

0.19

4.81

16.31

14.77

0.51

0.33

4.00

15.84

15.26

GSAD (×10⁻²)

4.97

4.91

4.94

156.76

162.63

RE (×10⁻⁴)

4.49

4.30

4.33

13.48

8.29

Time (s)

1.61×10³

0.16

1.56

48.22

0.70×10³