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

Table 4

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	10.0897	12.5563	1030	10.09	12.56
2	1	10.7509	13.23	586	9.94	12.34
	2	8.8628	11.1749	444
3	1	11.48	14.53	182	10.07	12.52
	2	9.79	12.10	533
	3	9.72	12.06	315
4	1	12.17	14.58	108	9.75	12.19
	2	9.36	11.88	249
	3	10.79	13.31	297
	4	8.49	10.83	376
7	1	11.23	14.50	78	10.02	12.54
	2	10.26	12.84	214
	3	11.47	13.77	246
	4	6.60	9.23	103
	5	10.71	14.00	89
	6	9.57	12.07	171
	7	8.96	10.75	129
10	1	12.37	15.57	54	10.80	13.77
	2	8.96	11.30	159
	3	11.41	14.68	114
	4	6.12	8.83	102
	5	11.65	14.58	86
	6	10.38	12.75	162
	7	9.096	10.99	115
	8	10.82	12.85	150
	9	18.15	22.37	25
	10	20.61	30.16	63