Implications of Spatiotemporal Data Aggregation on Short-Term Traffic Prediction Using Machine Learning Algorithms

Table 7

Comparison of feature selection methods; traffic volume predictions under all 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.

Model	Features	Accuracy			RMSE			MAE
		Correlation	Random	RFE	Correlation	Random	RFE	Correlation	Random	RFE
ANN	10	0.864	0.853	0.863	40.5	47.0	42.2	27.9	32.7	29.1
	20	0.880	0.850	0.878	37.7	46.2	34.7	25.7	32.9	24.8
	40	0.891	0.866	0.896	35.4	39.5	31.2	24.3	28.0	21.7
	60	0.893	0.877	0.900	35.5	36.9	29.0	23.8	26.5	20.8
	80	0.893	0.881	0.905	35.2	36.6	26.9	23.7	25.5	19.3
	100	0.894	0.896	0.905	34.9	30.8	27.5	23.5	21.9	19.6
	120	0.894	0.885	0.904	34.6	33.8	29.0	23.3	23.9	20.4
	140	0.889	0.889	0.900	35.4	33.1	28.7	23.8	23.6	20.3
	160	0.897	0.879	0.902	33.1	37.6	29.6	22.5	26.3	20.5
	180	0.898	0.884	0.896	32.7	34.3	31.4	22.3	24.4	21.7
RF	10	0.871	0.841	0.886	39.9	49.6	34.6	27.5	34.5	24.2
	20	0.880	0.847	0.897	37.5	45.0	30.4	25.9	32.6	21.5
	40	0.886	0.875	0.902	36.1	36.2	28.3	24.7	25.9	20.1
	60	0.891	0.882	0.903	35.1	35.0	28.3	23.7	24.9	20.1
	80	0.892	0.866	0.904	35.0	36.0	28.0	23.5	25.5	19.9
	100	0.893	0.886	0.905	34.8	33.7	27.7	23.3	24.2	19.7
	120	0.894	0.885	0.905	34.7	34.6	27.8	23.2	24.5	19.8
	140	0.894	0.890	0.905	34.7	32.8	27.7	23.2	23.3	19.7
	160	0.894	0.883	0.905	34.7	33.7	27.7	23.2	24.2	19.7
	180	0.895	0.890	0.905	34.6	32.9	27.7	23.1	23.4	19.7
SVR	10	0.859	0.758	0.867	41.6	76.2	38.3	29.2	51.3	27.5
	20	0.870	0.843	0.882	40.1	55.5	33.7	27.8	36.4	24.4
	40	0.877	0.850	0.895	38.4	47.8	30.9	26.5	33.1	22.2
	60	0.881	0.854	0.895	37.8	49.7	32.1	25.7	34.2	22.7
	80	0.885	0.879	0.897	37.5	38.2	31.5	25.2	26.5	22.3
	100	0.886	0.876	0.896	37.4	38.2	32.1	24.9	26.9	22.6
	120	0.887	0.869	0.896	37.6	42.4	31.8	25.1	29.6	22.4
	140	0.887	0.878	0.897	37.7	38.9	31.6	25.1	26.9	22.3
	160	0.887	0.878	0.896	37.7	38.7	31.7	25.1	27.0	22.3
	180	0.887	0.878	0.897	37.8	38.8	31.4	25.1	27.1	22.1