Implications of Spatiotemporal Data Aggregation on Short-Term Traffic Prediction Using Machine Learning Algorithms
Table 8
Comparison of feature selection methods.
Model
Features
Accuracy
RMSE
MAE
Correlation
Random
RFE
Correlation
Random
RFE
Correlation
Random
RFE
ANN
10
0.833
0.800
0.855
70.1
80.7
58.3
49.8
59.1
43.4
20
0.845
0.822
0.880
66.1
69.4
47.8
46.5
53.6
35.8
40
0.861
0.843
0.891
60.2
63.8
45.5
42.6
47.6
33.3
60
0.857
0.864
0.901
62.8
55.6
41.1
43.8
41.6
30.1
80
0.861
0.857
0.906
61.4
60.6
39.8
42.9
43.5
28.7
100
0.862
0.892
0.906
60.4
45.3
39.0
42.3
32.8
28.3
120
0.861
0.883
0.907
61.1
49.5
40.0
42.7
35.9
28.8
140
0.856
0.886
0.907
63.5
48.2
40.0
44.1
35.0
28.4
160
0.874
0.875
0.905
55.6
54.0
40.0
39.1
38.4
29.0
180
0.868
0.876
0.902
57.2
52.1
43.9
40.2
38.0
31.0
RF
10
0.832
0.797
0.875
69.2
81.1
52.4
50.3
61.1
38.5
20
0.842
0.836
0.886
65.9
62.9
48.0
47.8
48.9
34.7
40
0.847
0.858
0.894
64.0
55.5
43.9
46.0
42.1
32.2
60
0.852
0.856
0.892
63.7
58.7
44.6
45.1
43.7
32.8
80
0.851
0.865
0.893
64.0
57.2
44.5
45.2
41.1
32.6
100
0.852
0.868
0.893
63.8
54.2
44.2
45.0
40.4
32.5
120
0.851
0.860
0.893
64.0
57.6
44.2
45.2
42.3
32.5
140
0.852
0.868
0.893
63.8
54.0
44.0
45.0
40.4
32.4
160
0.851
0.867
0.894
64.0
53.9
43.9
45.1
40.2
32.4
180
0.852
0.872
0.893
63.9
52.5
44.1
44.9
38.7
32.4
SVR
10
0.825
0.722
0.850
72.6
114.1
59.3
53.0
84.4
45.2
20
0.822
0.751
0.880
73.5
100.8
47.2
53.4
73.1
36.5
40
0.834
0.796
0.874
69.4
81.6
50.0
50.1
60.4
37.7
60
0.834
0.816
0.878
70.2
76.3
50.0
50.0
55.2
37.2
80
0.832
0.838
0.879
71.5
66.0
49.9
50.5
48.7
36.9
100
0.832
0.842
0.879
72.0
63.8
50.3
50.5
47.5
37.1
120
0.829
0.828
0.877
72.7
70.0
50.8
51.2
51.8
37.5
140
0.830
0.832
0.876
72.6
69.3
51.3
51.1
50.7
37.8
160
0.829
0.839
0.875
72.7
65.9
51.7
51.1
48.3
38.0
180
0.830
0.835
0.876
72.6
66.9
51.3
51.1
49.5
37.7
Traffic volume predictions under nonrecurring conditions with input data; given a constrained number of features, in most cases, the RFE method achieves better performance compared to random and correlation-based feature selection.
