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

Table 7

MAE and RMSE using LMS 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	10.01	12.45	1030	10.01	12.45
2	1	10.69	13.13	642	9.89	12.29
	2	8.78	11.12	462
3	1	11.41	14.32	194	9.98	12.46
	2	9.69	12.11	583
	3	9.65	11.98	329
4	1	12.01	14.38	122	9.63	12.06
	2	9.22	11.68	276
	3	10.65	13.21	326
	4	8.34	10.67	398
7	1	11.12	14.22	87	9.92	12.41
	2	10.11	12.48	232
	3	11.23	13.74	289
	4	6.49	9.14	109
	5	10.77	13.95	98
	6	9.54	12.03	177
	7	8.79	10.46	148
10	1	12.28	13.98	63	10.53	13.27
	2	8.78	11.25	175
	3	11.26	14.59	126
	4	5.87	8.78	116
	5	11.43	14.23	101
	6	10.11	11.48	171
	7	8.84	10.23	122
	8	10.64	14.43	162
	9	16.49	19.78	37
	10	18.62	24.29	74