Towards Enhancement of Performance of K-Means Clustering Using Nature-Inspired Optimization Algorithms

Table 7

Testing objective function fitness and CPU time consumption on IRIS.

Objective function value
	Best	Worst	Average
K-means	78.9451	152.3687	127.8941
C-ACO	139.3081	150.9815	144.79
C-Firefly	78.940	109.4036	89.88241
C-Cuckoo	78.940	78.940	78.940
C-Bat	78.940	81.2655	79.46626
CPU time (second)
	Best	Worst	Average
K-means	51.291414	51.673431	51.444755
C-ACO	440.7980	443.9105	443.0668
C-Firefly	142.899517	177.743484	167.2426438
C-Cuckoo	15.499098	15.798136	15.7319299
C-Bat	8.621	8.835	8.7549