Table 2. Running time in seconds. Ratio column represents running time of BC to running time of current BC ratio.

	BC	e-BC		a-BC		k-BC
						k=3		k=4
	Time	Time	Ratio	Time	Ratio	Time	Ratio	Time	Ratio
Twitter	7,163.1	326.2	22.0	9,568.7	0.7	1,674.0	4.3	5,656.7	1.3
Amazon	65,914.7	1,353.8	48.7	27,307.1	2.4	888.8	74.2	1481.6	44.5