Compression Algorithm of Road Traffic Spatial Data Based on LZW Encoding

Table 15

The indicators results of PCA and LZW encoding on June 19, 2011.

Road segment	CR		AE		marerr		σ
	PCA	LZW	PCA	LZW	PCA	LZW	PCA	LZW
HI3009b	2.01	9.73	7.43	11.28	8.10	14.82	9.94	13.43
HI7036b	2.01	5.71	9.43	9.76	13.31	12.11	11.82	12.65
HI7058b	2.01	16.00	7.15	6.93	7.30	7.67	9.23	9.33