Cooperation-Controlled Learning for Explicit Class Structure in Self-Organizing Maps

Table 2

Information, input information, and quantization and topographic errors obtained by the three methods for the housing data. The parameter was set to 100. In the table, “information” and “input inf” represent mutual information and input information, respectively.

Methods	Measures		Information	Input inf.	QE	TE
SOM	Average				0.081	0.027
	Std dev.				0.001	0.012
UCL	Average	5	4.428	0.000	0.052	0.234
	Std dev.		0.038	0.000	0.001	0.077
	Average	10	4.324	0.000	0.064	0.045
	Std dev.		0.028	0.000	0.001	0.017
	Average	15	4.207	0.000	0.072	0.033
	Std dev.		0.034	0.000	0.001	0.014
	Average	20	4.12	0.000	0.076	0.030
	Std dev.		0.037	0.000	0.001	0.014
	Average	25	4.093	0.000	0.077	0.029
	Std dev.		0.027	0.000	0.001	0.011
	Average	30	4.08	0.000	0.078	0.025
	Std dev.		0.046	0.000	0.001	0.009
WCL	Average	5	4.323	0.508	0.042	0.142
	Std dev.		0.016	0.057	0.000	0.046
	Average	10	4.100	0.565	0.051	0.029
	Std dev.		0.028	0.020	0.001	0.013
	Average	15	4.023	0.583	0.056	0.031
	Std dev.		0.028	0.030	0.001	0.016
	Average	20	3.981	0.586	0.059	0.023
	Std dev.		0.023	0.032	0.001	0.008
	Average	25	3.947	0.590	0.061	0.021
	Std dev.		0.027	0.033	0.002	0.006
	Average	30	3.909	0.588	0.063	0.025
	Std dev.		0.027	0.035	0.002	0.008