An Efficient Optimization Method for Solving Unsupervised Data Classification Problems

Table 2

Intracluster distances for real life datasets.

Dataset	Criteria	-means	TS	SA	PSO	BB-BC	GA	GSA	ACO	BBO
Cancer	Average	3032.2478	3251.37	3239.17	2981.7865	2964.3880	3249.46	2972.6631	3,046.06	2964.3879
	Best	2986.9613	2982.84	2993.45	2974.4809	2964.3875	2999.32	2965.7639	2,970.49	2964.3875
	Worst	5216.0895	3434.16	3421.95	3053.4913	2964.3890	3427.43	2993.2446	3,242.01	2964.3887
	Std.	315.1456	232.217	230.192	10.43651	0.00048	229.734	8.91860	90.50028	0.00036
CMC	Average	5543.4234	5993.59	5893.48	5547.8932	5574.7517	5756.59	5581.9450	5,819.1347	5532.2550
	Best	5542.1821	5885.06	5849.03	5539.1745	5534.0948	5705.63	5542.2763	5,701.9230	5532.2113
	Worst	5545.3333	5999.80	5966.94	5561.6549	5644.7026	5812.64	5658.7629	5,912.4300	5532.432
	Std.	1.5238	40.845	50.867	7.35617	39.4349	50.369	41.13648	45.634700	0.06480
Glass	Average	227.9779	283.79	282.19	230.49328	231.2306	255.38	233.5433	273.46	215.2097
	Best	215.6775	279.87	275.16	223.90546	223.8941	235.50	224.9841	269.72	210.6173
	Worst	260.8385	286.47	287.18	246.08915	243.2088	278.37	248.3672	280.08	233.9314
	Std.	14.1389	4.19	4.238	4.79320	4.6501	12.47	6.13946	3.5848	3.525
Iris	Average	105.7290	97.8680	99.95	98.1423	96.7654	125.1970	96.7311	97.1715	96.5653
	Best	97.3259	97.3659	97.45	96.8793	96.6765	113.9865	96.6879	97.1007	96.5403
	Worst	128.4042	98.56949	102.01	99.7695	97.4287	139.7782	96.8246	97.8084	96.6609
	Std.	12.3876	72.86	2.018	0.84207	0.20456	14.563	0.02761	0.367	0.0394
Vowel	Average	153,660.8071	162108.53	161566.28	153,218.23418	151,010.0339	159153.49	152,931.8104	159,458.1438	149072.9042
	Best	149,394.8040	149468.26	149370.47	152,461.56473	149,038.5168	149513.73	151,317.5639	149,395.602	148967.2544
	Worst	168,474.2659	165996.42	165986.42	158,987.08231	153,090.4407	165991.65	155,346.6952	165,939.8260	153051.96931
	Std.	4123.04203	2846.235	0.645	2945.23167	1859.3235	3105.544	2486.70285	3,485.3816	137.7311
Wine	Average	16,963.0441	16785.46	17,521.09	16,316.2745	16,303.4121	16,530.53	16,374.3091	16,530.53381	16292.6782
	Best	16,555.6794	16666.22	16,473.48	16,304.4858	16,298.6736	16,530.53	16,313.8762	16,530.53381	16292.6782
	Worst	23,755.0495	16837.54	18,083.25	16,342.7811	16,310.1135	16,530.53	16,428.8649	16,530.53381	16292.6782
	Std.	1180.6942	52.073	753.084	12.60275	2.6620	0	34.67122	0	0