Estimating the Concrete Compressive Strength Using Hard Clustering and Fuzzy Clustering Based Regression Techniques

Table 6

MAE and RMSE using Logistic Regression for different number of clusters in -means algorithm.

Number of clusters	Cluster number	MAE	RMSE	Number of records	Weighted MAE	Weighted RMSE
1	1	9.89	12.23	1030	9.99	12.41
2	1	10.35	12.92	642	9.60	11.9
	2	8.56	10.49	462
3	1	10.97	13.11	194	9.61	11.71
	2	9.35	11.38	583
	3	9.27	11.47	329
4	1	9.25	11.01	122	9.17	11.15
	2	8.88	10.98	276
	3	10.42	12.48	326
	4	8.32	10.21	398
7	1	10.61	12.44	87	9.22	11.27
	2	9.11	11.56	232
	3	10.89	13.11	289
	4	5.49	7.54	109
	5	9.31	11.19	98
	6	9.11	11.03	177
	7	8.11	9.64	148
10	1	10.68	12.78	63	9.26	11.21
	2	7.98	9.85	175
	3	10.77	13.17	126
	4	6.87	8.48	116
	5	9.56	11.59	101
	6	9.43	11.77	171
	7	8.45	10.19	122
	8	10.12	11.67	162
	9	10.01	12.33	37
	10	10.56	12.36	74