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Table 6 Classification results with three sets of QIS

From: Machine learning based GNSS signal classification and weighting scheme design in the built environment: a comparative experiment

QI set

Machine learning algorithm

Classification accuracy (%)

False positive (%)

(i)

SVR

82.30

9.87

(i)

KNN

88.21

6.20

(i)

GBDT

87.25

7.82

(i)

Decision tree

85.95

8.19

(i)

Random forest

89.62

5.32

(ii)

SVR

85.79

7.82

(ii)

KNN

88.63

5.99

(ii)

GBDT

87.92

7.33

(ii)

Decision tree

86.57

7.46

(ii)

Random forest

90.81

4.55

(iii)

SVR

86.01

7.10

(iii)

KNN

89.10

5.30

(iii)

GBDT

90.08

5.32

(iii)

Decision tree

89.08

5.07

(iii)

Random forest

92.20

3.40