Table 3. Results of different K value on the datasets PEMSBAY and PEMSM.

Methods	PEMSBAY (15 min)			PEMSM (15 min)
	MAE	MAPE (%)	RMSE	MAE	MAPE (%)	RMSE
K = 4	1.420	3.351	2.651	1.880	4.408	3.257
K = 8	1.419	3.327	2.623	1.868	4.396	3.241
K = 16	1.408	3.276	2.605	1.863	4.337	3.229
K = 32	1.414	3.291	2.600	1.886	4.430	3.272
K = 64	1.409	3.283	2.597	1.883	4.381	3.253
K = 128	1.403	3.230	2.582	1.875	4.367	3.239
K = 256	1.403	3.262	2.591	− −	− −	− −

Notes.

^− −Denotes that the experimental results cannot be obtained.