Recognition of Functional Areas Based on Call Detail Records and Point of Interest Data

Table 7

Results of quantitative verification.

Functional areas	Sample areas	Cluster ()	(km^2)	(km^2)	Identification index (%)
Education area	BIT	4	1.06	0.71	66.98
	Beijing Normal University	4	0.89	0.64	71.91
	Beijing University of Posts and Telecommunications	4	0.56	0.40	71.43
Residential area	Fangzhuang Region	3	1.20	0.99	82.50
	Pener alley Region	3	0.49	0.43	87.76
	Zhushikou West Street	3	1.01	0.94	93.07
Office area	Financial Street	1	0.33	0.25	75.76
	Hanhai Culture Building	1	0.54	0.39	72.22
	Ganjiakou Region	1	0.38	0.29	76.32
Commercial area	Qianmen Street	5	0.25	0.16	64.00
	Jianwai SOHO	5	0.45	0.29	64.44
	Dongxinglong Street	5	0.57	0.36	63.16
Park and scenery areas	Temple of Heaven Park	2	2.00	1.92	96.00
	Yuyuantan Park	2	0.96	0.91	94.79
	Beijing Zoo	2	0.66	0.63	95.45
Avg.					78.30