An Imputation Method for Missing Traffic Data Based on FCM Optimized by PSO-SVR

Table 3

A matrix-based missing data representation for “section pattern” and “lane pattern.”

	At the same lane but the adjacent sections				At the same section but the adjacent lanes
	Detector 1	Detector 2	⋯	Detector	Detector 1	Detector 2	⋯	Detector
00:00–00:05	15	10	⋯	12	34	47	⋯	?
00:05–00:10	?	23	⋯	21	?	36	⋯	44
00:10–00:15	13	?	⋯	?	26	32	⋯	29
00:15-00:20	13	10	⋯	?	12	32	⋯	?
⋯	⋯	⋯	⋯	⋯	⋯	⋯	⋯	⋯
23:40–23:45	45	43	⋯	44	?	53	⋯	46
23:45–23:50	46	39	⋯	37	43	52	⋯	48
23:50–23:55	?	29	⋯	34	48	?	⋯	56
23:55–00:00	44	33	⋯	35	36	?	⋯	54

Note. “?” is the missing values in traffic volume dataset.