Table 2.

CPU utilization.

Query requests	Time (ms)
	K-means clustering algorithm	Attribute-based K-means clustering algorithm	K-medoids clustering algorithm	Element-based K-harmonic means clustering algorithm
0	1480	1109	1000	770
50	2051	1998	1780	1459
100	3098	3050	2990	2561
150	4307	4092	4000	3050