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

Table 2

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	11.86	14.48	1030	11.86	14.48
2	1	12.71	15.45	586	11.73	14.31
	2	10.45	12.80	444
3	1	12.27	14.69	182	11.07	13.60
	2	11.30	13.89	533
	3	10.02	12.54	315
4	1	12.01	14.37	108	10.74	13.16
	2	9.59	12.44	249
	3	11.42	13.78	297
	4	10.60	12.81	376
7	1	10.86	13.31	78	10.52	12.87
	2	9.80	12.70	214
	3	12.17	14.38	246
	4	7.21	9.79	103
	5	9.67	12.45	89
	6	11.90	13.91	171
	7	9.75	11.36	129
10	1	12.50	14.78	54	10.58	12.88
	2	9.01	11.68	159
	3	12.21	15.20	113
	4	8.36	10.23	102
	5	10.63	12.98	86
	6	10.95	13.10	162
	7	9.43	11.58	115
	8	11.30	13.16	150
	9	12.78	15.15	25
	10	12.25	14.69	62