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

Table 5

MAE and RMSE using SLR 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	11.85	14.48	1030	11.85	14.48
2	1	12.64	15.43	642	11.71	14.27
	2	10.41	12.65	462
3	1	12.03	14.21	194	10.94	13.36
	2	11.12	13.65	583
	3	9.98	12.34	329
4	1	11.99	14.33	122	10.65	12.89
	2	9.56	12.24	276
	3	11.12	13.55	326
	4	10.62	12.35	398
7	1	10.82	12.96	87	10.26	12.78
	2	9.77	12.76	232
	3	11.98	14.12	289
	4	7.11	9.76	109
	5	9.26	12.42	98
	6	10.97	13.88	177
	7	9.51	11.21	148
10	1	11.65	14.65	63	10.44	12.85
	2	8.97	11.62	175
	3	11.95	14.98	126
	4	8.45	10.13	116
	5	10.22	12.92	101
	6	10.77	12.98	171
	7	9.56	12.24	122
	8	11.11	12.89	162
	9	12.65	14.78	37
	10	11.83	14.36	74